Add section about go dependencies to README
Add section about go dependencies to README

Signed-off-by: Alex Stupakov <1fd64e7e7deea04422d49dbf3b0237e862c9489a@pivotallabs.com>

matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests