chore: clean up package.json

Author: ZauberNerd

package.json

@@ -34,7 +34,7 @@
   },
   "homepage": "https://github.com/nerdlabs/patternplate-transform-cssmodules#readme",
   "keywords": [
-    "react",
+    "cssmodules",
     "patternplate",
     "transform",
     "pattern"
@@ -81,7 +81,9 @@
   "dependencies": {
     "css-modules-loader-core": "1.0.0",
     "lodash": "4.5.1",
-    "postcss": "5.0.18",
     "postcss-modules": "0.4.0"
+  },
+  "peerDependencies": {
+    "postcss": "5.0.18"
   }
 }