add prettier package

Author: mohsinulhaq

package.json

@@ -119,6 +119,7 @@
     "eslint-plugin-react": "^7.11.1",
     "gh-pages": "^2.0.0",
     "pre-commit": "^1.2.2",
+    "prettier": "^1.14.3",
     "prop-types": "^15.6.2",
     "react": "^16.5.2",
     "react-dom": "^16.5.2"

yarn.lock

@@ -1124,8 +1124,8 @@ ajv@^5.1.0, ajv@^5.3.0:
     json-schema-traverse "^0.3.0"
 
 ajv@^6.0.1, ajv@^6.1.0, ajv@^6.5.3:
-  version "6.5.3"
-  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.5.3.tgz#71a569d189ecf4f4f321224fecb166f071dd90f9"
+  version "6.5.4"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.5.4.tgz#247d5274110db653706b550fcc2b797ca28cfc59"
   dependencies:
     fast-deep-equal "^2.0.1"
     fast-json-stable-stringify "^2.0.0"
@@ -1903,8 +1903,8 @@ caniuse-api@^3.0.0:
     lodash.uniq "^4.5.0"
 
 caniuse-lite@^1.0.0, caniuse-lite@^1.0.30000884:
-  version "1.0.30000886"
-  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30000886.tgz#2127186c4f57da10d3ba26fc3e87dce4a5ddd3ae"
+  version "1.0.30000887"
+  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30000887.tgz#1769458c27bbdcf61b0cb6b5072bb6cd11fd9c23"
 
 capitalize@^1.0.0:
   version "1.0.0"
@@ -6630,7 +6630,7 @@ prepend-http@^1.0.0, prepend-http@^1.0.1:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/prepend-http/-/prepend-http-1.0.4.tgz#d4f4562b0ce3696e41ac52d0e002e57a635dc6dc"
 
-prettier@^1.14.2:
+prettier@^1.14.2, prettier@^1.14.3:
   version "1.14.3"
   resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.14.3.tgz#90238dd4c0684b7edce5f83b0fb7328e48bd0895"