Better description
Better description

Previously, the description for the Gem was the content of the
README.md file.  Unlike the Python world, this content is not
transformed when displayed on http://rubygems.org.  This change
simplifies the description to display better.

growthrepublic/git-pivotal-tracker-integration,v2dev/V2GPTI,nebhale/git-pivotal-tracker-integration,nebhale/git-pivotal-tracker-integration,v2dev/V2GPTI,growthrepublic/git-pivotal-tracker-integration