Sort flags in create output

Signed-off-by: Nathan LeClaire <nathan.leclaire@gmail.com>

drivers/drivers.go

@@ -112,6 +112,8 @@ func GetCreateFlags() []cli.Flag {
 		}
 	}
 
+	sort.Sort(ByFlagName(flags))
+
 	return flags
 }
 

drivers/flag_sort.go

@@ -0,0 +1,17 @@
+package drivers
+
+import "github.com/codegangsta/cli"
+
+type ByFlagName []cli.Flag
+
+func (flags ByFlagName) Len() int {
+	return len(flags)
+}
+
+func (flags ByFlagName) Swap(i, j int) {
+	flags[i], flags[j] = flags[j], flags[i]
+}
+
+func (flags ByFlagName) Less(i, j int) bool {
+	return flags[i].String() < flags[j].String()
+}