Merge pull request #184 from MrMage/more-improvements

improved error handling and structure throughout the project

.gitignore

@@ -2,16 +2,11 @@
 project.xcworkspace
 xcuserdata
 .build
-protoc-gen-swift
-protoc-gen-swiftgrpc
+/protoc-gen-swift
+/protoc-gen-swiftgrpc
 third_party/**
-Plugin/Packages/**
-Plugin/Sources/protoc-gen-swiftgrpc/templates.swift
-Plugin/protoc-*
-Plugin/swiftgrpc.log
-Plugin/echo.*.swift
-Echo
-test.out
-echo.pid
-SwiftGRPC.xcodeproj
+/Echo
+/test.out
+/echo.pid
+/SwiftGRPC.xcodeproj
 Package.resolved