added REAME to examples (#10)

* added browser javascript

* removed unneed theme configuration file

* added dependences

* new js version based on js/main.js

* changes to js

* test global variable

* added main file to generated js file

* Added NGSI V2 JavaScript SDK example

* Fixed documentation for js generation

* added readme to examples folder

Author: chicco785

examples/README.md

@@ -0,0 +1,4 @@
+# Examples
+
+* [A simple NGSI V2 JavaScript SDK example](javascript/README.md)
+* [A simple NodeJS application to test the SDK](node-js/README.md)