[Issue #193] Fixed documentation
[Issue #193] Fixed uml
Added simple cov
Added gem for code coverage
[#90][WIP] changed method from approve_keyword to disapprove_keyword
[#90][WIP] updated test to be for disapproval
[#90][WIP] updated documentation for disapproval
[#90][finished] updated UML for disapproval
[#90][MC] solved merge conflicts with master
[#81][WIP] updated UML for disapproval
[#81][WIP] changed method from approve to disapprove
[#81][WIP] updated documentation from approval to disapproval
[#81][WIP] updated test for disapproval
[#81][finished] forgot to add self. for method
[#181][WIP] checked code convetions
[#181][WIP] added missing end in my_subscription causing errors
[#181][WIP] removed unused twitter method
[#181][WIP] updated code conventions
[#199][WIP] corrected place of return statement
Fixed test exceptions for most of tests