Bump verison to 0.9

Signed-off-by: Jeffrey Morgan <jmorganca@gmail.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "Kitematic",
-  "version": "0.8.6",
+  "version": "0.9.0",
   "author": "Kitematic",
   "description": "Simple Docker Container management for Mac OS X.",
   "homepage": "https://kitematic.com/",