Strap

Ensures that a new or existing Mac has necessary development software.

Run it, replacing quoted values with your own:

curl -sLO https://raw.githubusercontent.com/les-okta/mac/master/strap.sh
bash strap.sh

This ensures the following are installed:

XCode Command Line Tools
Apple operating system and security updates
Homebrew
Homebrew Cask
bash completion
openssl
git
httpie
jenv
liquidprompt
iTerm2
Oracle JDK 8 with unlimited strength cryptography
maven
groovy
Docker
IntelliJ IDEA
GMavenPlus Plugin for IntelliJ IDEA