Merge branch 'release/0.1' into develop
updated Hashie version
updated .gitignore
update multi_xml version
...and other gems
bump version to 0.1.5
another update
Use Oauth2
Add activity stream posting
Add option to NOT parse response

Yammer activity stream posting seems to return a literal "" on success, which is invalid JSON.
Raise string error if we are not parsing body to json/xml

See option added in previous commit, 9ca1144.
Change activity stream API endpoint & json expected
Add method to list users
added method to list the user's networks
Forgot to require new Networks module
added method to list recent Praise
Merge pull request #1 from jslag/master

Add method to list a network's users
Relax the version requirements that don't seem to matter.
Merge branch 'master' into develop
Ignore the output of simple_cov