git deploy pushes to given branch (default master)

Signed-off-by: David Varvel <dvarvel@pivotallabs.com>

pkg/plugin/deploy/git.go

@@ -23,16 +23,21 @@ func (g *Git) Write(f *buildfile.Buildfile) {
 	// add target as a git remote
 	f.WriteCmd(fmt.Sprintf("git remote add deploy %s", g.Target))
 
+	destinationBranch := g.Branch
+	if destinationBranch == "" {
+		destinationBranch = "master"
+	}
+
 	switch g.Force {
 	case true:
 		// this is useful when the there are artifacts generated
 		// by the build script, such as less files converted to css,
 		// that need to be deployed to git remote.
 		f.WriteCmd(fmt.Sprintf("git add -A"))
 		f.WriteCmd(fmt.Sprintf("git commit -m 'add build artifacts'"))
-		f.WriteCmd(fmt.Sprintf("git push deploy $COMMIT:master --force"))
+		f.WriteCmd(fmt.Sprintf("git push deploy $COMMIT:%s --force", destinationBranch))
 	case false:
 		// otherwise we just do a standard git push
-		f.WriteCmd(fmt.Sprintf("git push deploy $COMMIT:master"))
+		f.WriteCmd(fmt.Sprintf("git push deploy $COMMIT:%s", destinationBranch))
 	}
 }