Updating start scripts

package.json

@@ -18,7 +18,9 @@
     "integration": "NODE_ENV=test _mocha --recursive test-integration/**",
     "linter": "./node_modules/.bin/jshint --config .jshintrc ./index.js ./lib ./test",
     "test": "npm run testsuite && npm run integration && npm run linter",
-    "dev": "NODE_ENV=development nodemon bin/storj-bridge.js",
+    "start": "if [[ ${NODE_ENV} == \"development\" ]]; then npm run start:dev; else npm run start:prod; fi",
+    "start:dev": "NODE_ENV=development nodemon ./bin/storj-bridge.js",
+    "start:prod": "NODE_ENV=production node ./bin/storj-bridge.js",
     "make-docs": "./node_modules/.bin/jsdoc index.js lib -r -R README.md -u ./doc -c .jsdoc.json --verbose -d ./jsdoc",
     "publish-docs": "gh-pages -d jsdoc --repo git@github.com:Storj/bridge.git",
     "payout-report": "node script/payouts.js"