chore: update to latest version of a few dev dependencies

Author: JustinBeckwith

package.json

@@ -35,27 +35,27 @@
     "bundlesize": "^0.17.0",
     "coveralls": "^3.0.0",
     "es6-promise": "^4.2.4",
-    "grunt": "^1.0.1",
+    "grunt": "^1.0.2",
     "grunt-banner": "^0.6.0",
     "grunt-cli": "^1.2.0",
-    "grunt-contrib-clean": "^1.0.0",
+    "grunt-contrib-clean": "^1.1.0",
     "grunt-contrib-nodeunit": "^1.0.0",
     "grunt-contrib-watch": "^1.0.0",
     "grunt-eslint": "^20.1.0",
     "grunt-karma": "^2.0.0",
-    "grunt-ts": "^6.0.0-beta.3",
+    "grunt-ts": "^6.0.0-beta.19",
     "grunt-webpack": "^1.0.18",
     "istanbul-instrumenter-loader": "^1.0.0",
     "jasmine-core": "^2.4.1",
     "karma": "^1.3.0",
-    "karma-chrome-launcher": "^2.0.0",
-    "karma-coverage": "^1.0.0",
-    "karma-firefox-launcher": "^1.0.0",
-    "karma-jasmine": "^1.0.2",
+    "karma-chrome-launcher": "^2.2.0",
+    "karma-coverage": "^1.1.1",
+    "karma-firefox-launcher": "^1.1.0",
+    "karma-jasmine": "^1.1.1",
     "karma-jasmine-ajax": "^0.1.13",
     "karma-opera-launcher": "^1.0.0",
     "karma-safari-launcher": "^1.0.0",
-    "karma-sauce-launcher": "^1.1.0",
+    "karma-sauce-launcher": "^1.2.0",
     "karma-sinon": "^1.0.5",
     "karma-sourcemap-loader": "^0.3.7",
     "karma-webpack": "^1.7.0",