added a method to pull app information

does a get to /v2/apps/<app id> and returns a
python object that parsed json from response body

in order for this to work, I also had to add the
ability to specify a eureka_port to connect
to eureka on
Cleaned up previous commit, added more get methods, bumped version
Small cosmetic changes
Merge branch 'rschultheis-discovery'
Added authors file