Merge pull request #218 from ucb-bar/ignore-docs-ci

Ignore docs in CircleCI

.ciignore

@@ -0,0 +1 @@
+docs/*

.githooks/ignore-certain-dirs-commit-msg

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+
+if [[ ! -a .ciignore ]]; then
+	exit # If .ciignore doesn't exists, just quit this Git hook
+fi
+
+# Load in every file that will be changed via this commit into an array
+changes=( `git diff --name-only --cached` )
+
+# Load the patterns we want to skip into an array
+mapfile -t blacklist < .ciignore
+
+for i in "${blacklist[@]}"
+do
+	# Remove the current pattern from the list of changes
+	changes=( ${changes[@]/$i/} )
+
+	if [[ ${#changes[@]} -eq 0 ]]; then
+		# If we've exhausted the list of changes before we've finished going
+		# through patterns, that's okay, just quit the loop
+		break
+	fi
+done
+
+if [[ ${#changes[@]} -gt 0 ]]; then
+	# If there's still changes left, then we have stuff to build, leave the commit alone.
+	exit
+fi
+
+# Prefix the commit message with "[skip ci]"
+sed -i '1s/^/[skip ci] /' "$1"

scripts/add-githooks.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+
+# adds githooks, expects to be run from base directory
+
+git config core.hooksPath .githooks