Initial to Request library

I have added some functions for building off of. They use the request
library which has more functionality than urllib2.

Added the OAuth functions from requests_oauthlib.

All in Api class
Added _RequestUrl() for getting JSON data for replacment of _FetchUrl()
Changed GetTrendsWoeid() to use _RequestUrl()
Delete unused files
Update function GetHelpConfiguration

Uses _ReqestUrl
Updating to _RequestUrl #1

Updated the following to use _RequestUrl:
GetHelpConfiguration
GetSearch
GetUsersSearch

Functions have been tested and work.
Merge pull request #1 from jarobins/master

Switch to Requests
Adding the new dependencies 

Need to add the requests and requests_oauthlib dependencies.
More _RequestUrl updates

Going through the entire code to remove _FetchUrl and replace with
_RequestUrl
Request changes and tidying up

Added more _RequestUrl functions and also cleaned up the code for
checking if the user entered in all the oauth data.
Request Update

More _RequestUrl changes. The PostRetweet function
Update README.md

added note about new dependencies.
More requests updates
Final request update commit
Removing old OAuth

Replacing the old OAuth library with the new requests library
Complete Removal of oauth2
working prototype of post_with_media

Very basic working function that allows posting pictures to twitter.
Merge pull request #4 from bear/master

back to master
Retweeters Base Function

getting a json response, but no data yet
PostMedia function update

finished function for uploading media to python
Update README.md
merged latest and some updates:
1) add 'lang' filed to Status class 
2) change MaximumHitFrequency to GetSleepTime to avoid rate limit 
2) modify GetFollowers, GetFollowerIDs, GetFriends, GetFriendsIDs using
GetSleepTime method