Document new features in readme.
Improve search for constants.php.
Replace "targets" with "symlinks", "userfiles" and "runonce" sections.
Add .gitignore.
Fix callback parameter typing.
Add missing call of ModuleInstaller::updateRunonce().
Fix missing symlinks if "symlinks" section not exists.
Add special behavior when symlinking contao-community-alliance/composer module.
Fix certain issues in symlink generation.
Improve symlink generation.
Add missing ModuleInstaller::removeSymlinks() method.
Do not use TL_ROOT in ModuleInstaller::updateUserfiles().
Fix absolute path issue in ModuleInstaller::updateRunonce().
Fix missing files in generated runonce.php.
Merge pull request #6 from tristanlins/master

Add support for "symlinks", "userfiles" and "runonce" sections.