Documentation

Signed-off-by: Fabio José <fabiojose@gmail.com>

README.md

@@ -1,2 +1,31 @@
 # sdk-javascript
 Javascript SDK for CloudEvents
+
+# Repository Structure
+
+```text
+├── index.js
+├── lib
+│   ├── cloudevent.js
+│   ├── jsonformatter.js
+│   ├── spec_0_1.js
+│   └── spec_0_2.js
+├── LICENSE
+├── package.json
+├── README.md
+└── test
+    ├── cloudevent_spec_0_1.js
+    └── cloudevent_spec_0_2.js
+
+```
+
+* `index.js`: exports the Cloudevent class
+
+* `lib/cloudevent.js`: implementation of Cloudevent class
+
+* `lib/jsonformatter.js`: implementation for JSON Format
+
+* `lib/spec_0_1.js`: implementation for spec version 0.1
+
+* `lib/spec_0_2.js`: implementation for spec version 0.2
+