chore(Dependencies): upgrade prettier to support TS 3.7

This is temporarily pointing prettier to a specific commit, since a new version hasn't been released yet

Author: fjcaetano

package.json

@@ -42,7 +42,7 @@
     "conventional-changelog-cli": "^2.0.25",
     "husky": "^3.0.5",
     "jest": "^24.9.0",
-    "prettier": "^1.18.2",
+    "prettier": "prettier/prettier#3618361e5607e644948020f5726761c5dff12f15",
     "react-test-renderer": "^16.9.0",
     "ts-jest": "^24.1.0",
     "typedoc": "^0.15.0",