Add TwitterUpdateTask
Add idea folder of PhpStorm to gitignore
Add GitDateTask
Add LinkTask, LinkSiteTask and LinkLangTask
Add LICENSE.txt
Add README
Use realpath() for GitVersionTask

This was a difference between different files of Akeeba Builder. I didn't encounter problems but using realpath() seems like a good idea.
Merge pull request #1 from Twentronix/mergetxbuilder

Merge Twentronix Builder into Akeeba Build Tools
Awesome work by @jurianeven