Rakefile in salesforce-dcgen-0.1.0 vs Rakefile in salesforce-dcgen-0.2.0

@@ -1,2 +1,19 @@
 require "bundler/gem_tasks"
 
+# extracted from https://github.com/grosser/project_template
+rule /^version:bump:.*/ do |t|
+  sh "git status | grep 'nothing to commit'" # ensure we are not dirty
+  index = ['major', 'minor','patch'].index(t.name.split(':').last)
+  file = 'lib/dcgen/version.rb'
+
+  version_file = File.read(file)
+  old_version, *version_parts = version_file.match(/(\d+)\.(\d+)\.(\d+)/).to_a
+  version_parts[index] = version_parts[index].to_i + 1
+  version_parts[2] = 0 if index < 2
+  version_parts[1] = 0 if index < 1
+  new_version = version_parts * '.'
+  File.open(file,'w'){|f| f.write(version_file.sub(old_version, new_version)) }
+
+  sh "bundle && git add #{file} && git commit -m 'bump version to #{new_version}'"
+end
+