Create CONTRIBUTING.md (#15)

Signed-off-by: Dimitar Milov <dmilov@vmware.com>

CONTRIBUTING.md

@@ -0,0 +1,30 @@
+# Contributing to CloudEvents sdk-powershell
+
+We welcome and appreciate contributions from the community. Please read this document for different ways of getting involved with the sdk-powershell.
+
+## Contributing to Issues
+
+- Ensure that the issue you are about to file is not already open. If someone has already opened a similar issue, please leave a comment or add a GitHub reaction to the top comment to express your interest.
+- If you can't find your issue already, [open a new issue](https://github.com/cloudevents/sdk-powershell/issues/new).
+
+## Contributing to Code
+CloudEvents.SDK PowerShell consists of a .NET project that resolves the [CloudEvents sdk-csharp](https://github.com/cloudevents/sdk-csharp) dependency, PowerShell script module with the sdk advanced functions, and Pester tests. 
+
+### Required Toolchain
+- [.NET 5.0](https://dotnet.microsoft.com/download/dotnet/5.0) SDK
+- [PowerShell 7.0](https://github.com/PowerShell/PowerShell#get-powershell) or higher
+- [Pester 5.1.1](https://www.powershellgallery.com/packages/Pester/5.1.1) or higher
+
+### Building and testing
+The CloudEvents.Sdk module source code is in the `src` directory. We have unit tests and localhost integration tests available in the `test` directory.<br/>
+<br/>
+The `build.ps1` script is the entry point to build the module and run the tests. It has two parameters<br/>
+&nbsp;&nbsp;&nbsp;1. `OutputDir` - The destination directory for the `CloudEvents.Sdk` module<br/>
+&nbsp;&nbsp;&nbsp;2. `TestsType` - Specifies which tests (`none` | `unit` | `integration` | `all`) to run on successful module build.<br/><br/>
+Running the `build.ps1` without specifying parameters produce the module in a `CloudEvents.Sdk` directory under the repository root directory, and runs all tests.
+
+### Forks and Pull Requests
+
+Anyone can [fork](https://docs.github.com/en/github/getting-started-with-github/fork-a-repo) the repository into their own user account, where they can make private changes. To contribute your changes back create a [pull request](https://docs.github.com/en/github/collaborating-with-issues-and-pull-requests/about-pull-requests). A pull request should relate to an existing issue.<br/>
+<br/>
+Adding new features or fixing bugs might require adding or updating tests. Before creating a pull request make sure all tests pass locally.

README.md

@@ -144,46 +144,3 @@ is converted to
 ```powershell
 $bytes = Read-CloudEventData -CloudEvent $cloudEvent
 ```
-
-# Build the **CloudEvents.Sdk** Module
-
-The `build.ps1` script
-- Creates the CloudEvents PowerShell Module in a `CloudEvents` directory.
-- Runs functions unit tests
-- Runs local integrations tests
-- Creates a catalog file for the CloudEvents Module
-
-### Prerequisites
-- [PowerShell 7.0](https://github.com/PowerShell/PowerShell/releases/tag/v7.0.4)
-- [Pester 5.1.1](https://www.powershellgallery.com/packages/Pester/5.1.1)
-- [dotnet SDK](https://dotnet.microsoft.com/download/dotnet/5.0)
-
-```powershell
-> ./build.ps1
-[9:52:42 AM] INFO: Publish CloudEvents.Sdk Module to 'C:\git-repos\cloudevents\cloudevents-sdk-powershell\CloudEvents.Sdk'
-Microsoft (R) Build Engine version 16.8.3+39993bd9d for .NET
-Copyright (C) Microsoft Corporation. All rights reserved.
-
-  Determining projects to restore...
-  All projects are up-to-date for restore.
-  CloudEventsPowerShell -> C:\git-repos\cloudevents\cloudevents-sdk-powershell\src\CloudEventsPowerShell\bin\Release\netstandard2.0\CloudEventsPowerShell.dll
-  CloudEventsPowerShell -> C:\git-repos\cloudevents\cloudevents-sdk-powershell\CloudEvents.Sdk\
-[9:52:44 AM] INFO: Run unit tests
-
-Starting discovery in 9 files.
-Discovery finished in 294ms.
-[+] C:\git-repos\cloudevents\cloudevents-sdk-powershell\test\unit\Add-CloudEventData.Tests.ps1 1.01s (184ms|656ms)
-[+] C:\git-repos\cloudevents\cloudevents-sdk-powershell\test\unit\Add-CloudEventJsonData.Tests.ps1 329ms (39ms|279ms)   [+] C:\git-repos\cloudevents\cloudevents-sdk-powershell\test\unit\Add-CloudEventXmlData.Tests.ps1 336ms (58ms|267ms)    [+] C:\git-repos\cloudevents\cloudevents-sdk-powershell\test\unit\ConvertFrom-HttpMessage.Tests.ps1 557ms (203ms|337ms) [+] C:\git-repos\cloudevents\cloudevents-sdk-powershell\test\unit\ConvertTo-HttpMessage.Tests.ps1 508ms (132ms|361ms)   [+] C:\git-repos\cloudevents\cloudevents-sdk-powershell\test\unit\New-CloudEvent.Tests.ps1 275ms (22ms|243ms)
-[+] C:\git-repos\cloudevents\cloudevents-sdk-powershell\test\unit\Read-CloudEventData.Tests.ps1 257ms (10ms|236ms)
-[+] C:\git-repos\cloudevents\cloudevents-sdk-powershell\test\unit\Read-CloudEventJsonData.Tests.ps1 308ms (40ms|257ms)
-[+] C:\git-repos\cloudevents\cloudevents-sdk-powershell\test\unit\Read-CloudEventXmlData.Tests.ps1 310ms (53ms|246ms)
-Tests completed in 3.94s
-Tests Passed: 28, Failed: 0, Skipped: 0 NotRun: 0
-[9:52:49 AM] INFO: Run integration tests
-
-Starting discovery in 1 files.
-Discovery finished in 176ms.
-[+] C:\git-repos\cloudevents\cloudevents-sdk-powershell\test\integration\HttpIntegration.Tests.ps1 2.54s (1.77s|617ms)
-Tests completed in 2.56s
-Tests Passed: 5, Failed: 0, Skipped: 0 NotRun: 0
-```

build.ps1

@@ -3,10 +3,32 @@
 #  SPDX-License-Identifier: Apache-2.0
 # **************************************************************************
 
+<#
+   .SYNOPSIS
+   Builds and tests the CloudEvents.Sdk module
+
+
+   .DESCRIPTION
+   The script is the entry point to build and test the CloudEvents.Sdk module.
+
+   .PARAMETER OutputDir
+   Target directory where the CloudEvents.Sdk will be created by the script. The default is the PS Script Root
+
+   .PARAMETER TestsType
+   Specifies the type of the test to be run post build. Possible values are 'none','unit', 'integration', 'all'. 
+   The default is 'all'
+
+#>
+
 param(
    [Parameter()]
    [string]
-   $OutputDir
+   $OutputDir,
+
+   [Parameter()]
+   [ValidateSet('none','unit', 'integration', 'all')]
+   [string]
+   $TestsType = 'all'
 )
 
 $moduleName = 'CloudEvents.Sdk'
@@ -44,7 +66,7 @@ function Test-BuildToolsAreAvailable {
 function Start-Tests {
 param(
    [Parameter()]
-   [ValidateSet('unit', 'integration', 'all')]
+   [ValidateSet('unit', 'integration')]
    [string]
    $TestsType
 )
@@ -86,7 +108,11 @@ dotnet publish -c Release -o $OutputDir $dotnetProjectPath
 Get-ChildItem "$dotnetProjectName*" -Path $OutputDir  | Remove-Item -Confirm:$false
 
 # 4. Run Unit Tests
+if ($TestsType -eq 'unit' -or $TestsType -eq 'all') {
    Start-Tests -TestsType 'unit'
+}
 
 # 5. Run Integration Tests
+if ($TestsType -eq 'integration' -or $TestsType -eq 'all') {
    Start-Tests -TestsType 'integration'
+}