Structurally replace gitflow by git-flow, as a true git extension.

README.mdown

-gitflow
-=======
+git-flow
+========
 A collection of Git extensions to provide high-level repository operations
 for Vincent Driessen's [branching model](http://nvie.com/archives/323 "original
 blog post").

git-flow

 #!/bin/sh
 #
-# gitflow -- A collection of Git wrapper scripts to provide high-level
-# repository operations for Vincent Driessen's branching model:
+# git-flow -- A collection of Git extensions to provide high-level
+# repository operations for Vincent Driessen's branching model.
 #
 # Original blog post presenting this model is found at:
 #    http://nvie.com/archives/323
@@ -34,7 +34,7 @@ has() {
 
 usage() {
 	. "$GITFLOW_DIR/git-flow-version"
-	echo "gitflow, version $GITFLOW_VERSION"
+	echo "git-flow, version $GITFLOW_VERSION"
 	echo
 	echo "usage: git flow <cmd> <type> <args>"
 	echo "       git flow init [<url>]"

git-flow-feature

 #
-# gitflow -- A collection of Git wrapper scripts to provide high-level
-# repository operations for Vincent Driessen's branching model:
+# git-flow -- A collection of Git extensions to provide high-level
+# repository operations for Vincent Driessen's branching model.
 #
 # Original blog post presenting this model is found at:
 #    http://nvie.com/archives/323

git-flow-hotfix

 #
-# gitflow -- A collection of Git wrapper scripts to provide high-level
-# repository operations for Vincent Driessen's branching model:
+# git-flow -- A collection of Git extensions to provide high-level
+# repository operations for Vincent Driessen's branching model.
 #
 # Original blog post presenting this model is found at:
 #    http://nvie.com/archives/323

git-flow-release

 #
-# gitflow -- A collection of Git wrapper scripts to provide high-level
-# repository operations for Vincent Driessen's branching model:
+# git-flow -- A collection of Git extensions to provide high-level
+# repository operations for Vincent Driessen's branching model.
 #
 # Original blog post presenting this model is found at:
 #    http://nvie.com/archives/323

git-flow-support

 #
-# gitflow -- A collection of Git wrapper scripts to provide high-level
-# repository operations for Vincent Driessen's branching model:
+# git-flow -- A collection of Git extensions to provide high-level
+# repository operations for Vincent Driessen's branching model.
 #
 # Original blog post presenting this model is found at:
 #    http://nvie.com/archives/323