Ignore unneeded dot files in npm package

Author: jessebeach

.npmignore

@@ -1,7 +1,10 @@
+.DS_Store
+.flowconfig
+.gitignore
+.travis.yml
+coverage
+flow
 node_modules
-reports
 npm-debug.log
-coverage
-.gitignore
-.DS_Store
+reports
 yarn-error.log

package.json

@@ -20,7 +20,7 @@
     "build": "rimraf lib && babel src --out-dir lib && cp -R src/util/attributes lib/util/attributes",
     "prepublish": "npm run lint && npm run flow && npm run test && npm run build",
     "coveralls": "cat ./reports/lcov.info | coveralls",
-    "flow": "flow; test $? -eq 0 -o $? -eq 2",
+    "flow": "if [ ! -e ./.flowconfig ]; then echo \"Could not find .flowconfig\"; else flow; test $? -eq 0 -o $? -eq 2; fi",
     "lint": "eslint  --config .eslintrc src __tests__",
     "lint:fix": "npm run lint -- --fix",
     "pretest": "npm run lint:fix && npm run flow",