Moved all devDependencies to dependencies to fix npm

Author: John Haley

Diff for: package.json

@@ -63,16 +63,14 @@
     "combyne": "~0.6.2",
     "fs-extra": "^0.12.0",
     "lodash": "^2.4.1",
-    "nodegit-promise": "~1.0.0",
-    "promisify-node": "~0.1.2"
-  },
-  "devDependencies": {
     "istanbul": "~0.3.2",
     "jshint": "~2.5.6",
     "mocha": "~1.21.4",
     "nan": "~1.3.0",
     "node-gyp": "~1.0.2",
     "node-pre-gyp": "~0.5.27",
+    "nodegit-promise": "~1.0.0",
+    "promisify-node": "~0.1.2",
     "request": "~2.45.0",
     "tar": "~1.0.1"
   },