Prepare release v3.0.4 (#46)

Update peer dependency to allow Grunt 1.0

Author: jkillian

package.json

@@ -1,7 +1,7 @@
 {
   "name": "grunt-tslint",
   "description": "Grunt plugin for TypeScript Linter",
-  "version": "3.0.3",
+  "version": "3.0.4",
   "homepage": "https://github.com/palantir/grunt-tslint",
   "author": {
     "name": "Palantir Technologies, Inc."
@@ -34,7 +34,7 @@
     "typescript": "latest"
   },
   "peerDependencies": {
-    "grunt": "~0.4.5",
+    "grunt": ">=0.4.5",
     "tslint": "^3.0.0 || >=3.0.0-dev || >=3.1.0-dev || >=3.2.0-dev || >=3.3.0-dev || >=3.4.0-dev || >=3.5.0-dev || >=3.6.0-dev || >=3.7.0-dev"
   },
   "keywords": [