add generated files from "bundle gem"

lib/gcovinator.rb

@@ -0,0 +1,5 @@
+require "gcovinator/version"
+
+module Gcovinator
+  # Your code goes here...
+end

lib/gcovinator/version.rb

@@ -0,0 +1,3 @@
+module Gcovinator
+  VERSION = "0.1.0"
+end