add rake to Gemfile
use cf-app-utils gem to extract credentials from VCAP_SERVICES environment variable.
add instructions to generate github access token in README
clean up check for whether bindings exist
configure travis to test both develop and master branches
Move readme section about adding a service broker into new page in cf docs

README
- move the section about adding a service broker into new page in cf docs
- add notes about testing the example app to readme
- include cf and gcf commands in readme
- remove misc section in readme
- add links to the various CF docs on service broker.

Other files
- restructure settings.yml file to be consistent with docs
- clarify instruction comment in integration test file
github repo names are now prefixed with "github-service"
fix typo in .travis.yml so that CI runs again
Commits are created with the git author set to application name

- show value of VCAP_APPLICATION at /env endpoint
show the git command output in the web interface when creating/pushing a commit fails
use cf-app-utils gem from github.com/cloudfoundry
update link to Service Broker API docs page
fix link to Service Broker API docs page
add metadata to catalog
fix the metadata imageUrl
bump cf-app-utils gem to version 0.2
Merge branch 'master' into develop

Conflicts:
	README.md