Integrating https://github.com/github/gitignore/blob/master/Go.gitignore

Integrating https://github.com/github/gitignore/blob/master/Go.gitignore

.gitignore

@@ -3,6 +3,7 @@
 
 # Binaries for programs and plugins
 *.exe
+*.exe~
 *.dll
 *.so
 *.dylib
@@ -15,3 +16,6 @@
 
 # Project-local glide cache, RE: https://github.com/Masterminds/glide/issues/736
 .glide/
+
+# Dependency directories (remove the comment below to include it)
+# vendor/