Also add basic skeleton implementation for the gitflow-feature and gitflow-release subcommands.

gitflow-feature

+#!/bin/sh
+
+usage() {
+	echo "usage: gitflow start feature <name> [<base>]"
+	echo "       gitflow finish feature <name>"
+}
+
+parse_args() {
+	# TODO: Implement the optional base argument
+	FEATURE="$1"
+	BASE="develop"
+	if [ "$FEATURE" = "" ]; then
+		echo "Missing argument <release>."
+		usage
+		exit 1
+	fi
+}
+
+start() {
+	# TODO
+	parse_args "$@"
+	gitflow_check_clean_working_tree
+	echo "git checkout -b $FEATURE $BASE"
+}
+
+finish() {
+	# TODO
+	parse_args "$@"
+	gitflow_check_clean_working_tree
+	echo "git checkout $BASE"
+	echo "git merge --no-ff $FEATURE"
+}
+

gitflow-hotfix

@@ -5,8 +5,18 @@ usage() {
 	echo "       gitflow finish hotfix <release>"
 }
 
+parse_args() {
+	RELEASE="$1"
+	if [ "$RELEASE" = "" ]; then
+		echo "Missing argument <release>."
+		usage
+		exit 1
+	fi
+}
+
 start() {
 	# TODO
+	parse_args "$@"
 	gitflow_check_clean_working_tree
 	echo "git checkout -b hotfix-$RELEASE master"
 	echo "Bump version number"
@@ -15,6 +25,7 @@ start() {
 
 finish() {
 	# TODO
+	parse_args "$@"
 	gitflow_check_clean_working_tree
 	echo "git checkout master"
 	echo "git merge --no-ff hotfix-$RELEASE"

gitflow-release

+#!/bin/sh
+
+usage() {
+	echo "usage: gitflow start release <release>"
+	echo "       gitflow finish release <release>"
+}
+
+parse_args() {
+	RELEASE="$1"
+	if [ "$RELEASE" = "" ]; then
+		echo "Missing argument <release>."
+		usage
+		exit 1
+	fi
+}
+
+start() {
+	# TODO
+	parse_args "$@"
+	gitflow_check_clean_working_tree
+	echo "git checkout -b release-$RELEASE develop"
+	echo "Bump version number"
+	echo "Fix bug"
+}
+
+finish() {
+	# TODO
+	parse_args "$@"
+	gitflow_check_clean_working_tree
+	echo "git checkout master"
+	echo "git merge --no-ff release-$RELEASE"
+	echo "git checkout develop"
+	echo "git merge --no-ff release-$RELEASE"
+	echo "git branch -d release-$RELEASE"
+}
+