Add API Gateway Service

Author: wilburrito

.gitignore

@@ -2,14 +2,30 @@
 
 # dependencies
 /node_modules
+/frontend/node_modules
+/backend/node_modules
+/QuestionService/node_modules
+/QuestionService/javascript
+/AuthService/javascript
+/AuthService/node_modules
+/MatchingService/javascript
+/MatchingService/node_modules
+/UserService/node_modules
+/UserService/javascript
+/ApiGatewayService/javascript
+/ApiGatewayService/node_modules
+/backend/javascript
 /.pnp
 .pnp.js
 
+/.history
 # testing
 /coverage
 
 # production
-/build
+/frontend/build
+/backend/build
+/QuestionService/build
 
 # misc
 .DS_Store
@@ -18,6 +34,7 @@
 .env.development.local
 .env.test.local
 .env.production.local
+.env*
 
 npm-debug.log*
 yarn-debug.log*