Changed API version to 1.1

Twitter API version 1 is deprecated and so it was returning page not found error. So updated the version to 1.1. 
Regards,
Kishan
Updated for use with Twitter API version 1.1

The search endpoint is no longer a separate URI (https://dev.twitter.com/docs/api/1.1). Everything else seems to work as expected, as long as the user authenticates. I have tested this with almost all GET endpoints, but not for any POST endpoints.
Simplified API Version 1.1 Support
Updated EpiTwitter for API v1.0 compatibility.

This change allows version 1.1 to work, while still allowing the default (version 1.0) to work as expected.
Forgot to add the getApiURL method change...

Will use the search version 1 API URI if applicable, but will use the normal API URI otherwise.
Merge branch 'master' of https://github.com/ksg91/twitter-async into pr-166
Updating about 1/2 of the unit tests for v1.1 of the API. #173 #161
Merge branch 'master' of github.com:jmathai/twitter-async
Merge branch 'master' of https://github.com/aaronwaldon/twitter-async into pr-166
Merge branch 'pr-166'
1.0 has been deprecated as of 11th June 2013. Must use version 1.1.
Merge pull request #175 from ashcairo/patch-1

1.0 has been deprecated as of 11th June 2013. Must use version 1.1.
Update EpiTwitter.php

Use https for api url.
Merge pull request #190 from danieljonesorg/patch-1

Update EpiTwitter.php