Project structure refactor:

- Change package name general_server to gateway
- Changing the structure of directories and packages
- Adding vendor to the project

vendor/github.com/yuin/gopher-lua/parse/Makefile

@@ -0,0 +1,7 @@
+all : parser.go
+
+parser.go : parser.go.y
+	goyacc -o $@ parser.go.y; [ -f y.output ] && ( rm -f y.output )
+
+clean:
+	rm -f parser.go