Automatically make a release by incrementing the version number in package.json or with a version number supplied

sk-release

# SK Release
# https://gist.github.com/bclinkinbeard/1331790

#!/bin/bash

# file in which to update version number
versionFile="package.json"

# extract version number from versionFile
# https://gist.github.com/DarrenN/8c6a5b969481725a4413
version=$(cat $versionFile \
  | grep version \
  | head -1 \
  | awk -F: '{ print $2 }' \
  | sed 's/[",]//g' \
  | tr -d '[[:space:]]')
if [ $1 ]
then
  newVersion=$1
else
  newVersion=${version%.*}.$((${version##*.}+1))
fi

versionLabel=v${newVersion}

# current Git branch
branch=$(git symbolic-ref HEAD | sed -e 's,.*/\(.*\),\1,')

# establish branch and tag name variables
devBranch=develop
masterBranch=master
releaseBranch=release/$versionLabel

# pull develop and master
git checkout develop;
git pull;

git checkout master;
git pull;

# create the release branch from the -develop branch
git checkout -b $releaseBranch $devBranch

# and replace version number with new version number
sed -i.backup -E "s/$version/$newVersion/" $versionFile $versionFile
# remove backup file created by sed command
rm $versionFile.backup

# commit version number increment
git commit -am "Release $versionLabel"

# merge release branch with the new version number into master
git checkout $masterBranch
git merge --no-ff --no-edit $releaseBranch

# create tag for new version from -master
git tag $versionLabel

# merge release branch with the new version number back into develop
git checkout $devBranch
git merge --no-ff --no-edit $releaseBranch

# remove release branch
git branch -d $releaseBranch

run sh sk-release.sh
or
run sh sk-releash.sh 1.1.1