chore(package.json): remove src from packaged files and ignore .map artifacts

Author: mCodex

package.json

@@ -17,7 +17,6 @@
     "./package.json": "./package.json"
   },
   "files": [
-    "src",
     "lib",
     "android",
     "ios",
@@ -33,6 +32,7 @@
     "!**/__tests__",
     "!**/__fixtures__",
     "!**/__mocks__",
+    "!**/*.map",
     "!**/.*"
   ],
   "scripts": {