Add bin/newver script for creating new Rubocop channels. (#129)

* Add `bin/newver` script for creating new Rubocop channels.

* Adds make bundle and updates newver script

* Make bundle uses docker, Following up on PR review
and to be consistency with how we update gems in other
repos

Author: wilson

Makefile

@@ -1,4 +1,4 @@
-.PHONY: image test docs
+.PHONY: image test docs bundle
 
 IMAGE_NAME ?= codeclimate/codeclimate-rubocop
 
@@ -14,3 +14,9 @@ docs: image
 		--workdir /usr/src/app \
 		--volume $(PWD):/usr/src/app \
 		$(IMAGE_NAME) sh -c "apk --update add git && bundle install --with=test && bundle exec rake docs:scrape"
+
+bundle:
+	docker run --rm \
+	  --entrypoint /bin/sh \
+	  --volume $(PWD):/usr/src/app \
+	  $(IMAGE_NAME) -c "cd /usr/src/app && bundle $(BUNDLE_ARGS)"

bin/newver

@@ -0,0 +1,38 @@
+#!/bin/sh
+set -eu
+
+if [ $# -eq 0 ]; then
+  >&2 echo "Usage: 'bin/newver X.Y.Z', where X.Y.Z is the Rubocop version to add."
+  exit 1
+fi
+NEWVER="$1"
+
+git checkout Gemfile*
+git checkout -b "newver/${NEWVER}"
+
+ed Gemfile <<-EDITS
+/gem "parser",/c
+gem "parser"
+.
+/gem "rubocop",/c
+gem "rubocop", "~> ${NEWVER}", require: false
+.
+wq
+EDITS
+
+make bundle -e BUNDLE_ARGS="update rubocop"
+make image
+make docs
+sudo chown -R $(id -u):$(id -g) config
+
+set +e
+make test
+retval=$?
+if [ $retval -ne 0 ]; then
+  >&2 echo "If tests fail, you may need to modify spec/support/currently_undocumented_cops.txt"
+  exit $retval
+fi
+set -e
+
+git add config spec Gemfile*
+git commit -v -m "Updated channel and documentation to Rubocop v${NEWVER}"