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.
PostMedia function update

finished function for uploading media to python
Update README.md
Revert "Removing old OAuth"

This reverts commit 3e64dc36a310e254ab255e93b8650360af06b837.
Revert "Complete Removal of oauth2"

This reverts commit c7a45acd3773ca7649ff0a6556c44e7afb9ed9e2.
Revert "Update README.md"

This reverts commit d29a3db71a38a5ecd66af31b1d36c8bc169c0c66.
Merge pull request #95 from jarobins/working

The Post Media Function