[examples] deleted this examples
[examples] update old examples
[examples] update forward and custom error examples
[examples] updated old proxy examples
[examples] updated old examples
[examples] updated websockets examples
[examples] updated balancer examples
[examples] added package.json with the dependencies needed by examples
[examples] fix the copyright header of example files
[examples] add example of gzip using the connect.compress() middleware
[examples] updated the modifyResponse-middleware example
[examples] added error-handling using callbacks and HTTP-to-HTTPS examples
[examples] updated bodyDecoder middleware example
[tests] Added a test case for run all the examples
 * I changed all the ports across examples to be different and can run at same time
[tests] disabled the examples-test by now
Set travis to run `npm test` while we fix coveralss.io integration