Fixed the Erlang version for travis
Added 'make test' command, which runs all eunit tests. Type 'make help' for a list of all commands.
Only need to test R16B at this moment because Travis does not support newer versions than that.
make run need to start an erlang node in a specific manner and it seems that rebar does not handle that.
Now testcases is also compiled correctly. Added a needed include folder from the webmachine library because our files are using it.
Some tests were failing, needed small adjustment.