Get crystal-icr installed on Mac using Brew

Package Information:

Name: crystal-icr
Use: Interactive console for Crystal programming language
URL: https://github.com/greyblake/crystal-icr

Installation Steps:

1. Open Terminal using Spotlight search by pressing <command+space>. Type terminal and hit Enter key.
2. Now, Execute

   ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null

3. Install crystal-icr using brew

   brew install crystal-icr

crystal-icr is ready to use now!