Add gitconfig settings from Github.app
Remove author-specific information from gitconfig
Source $HOME/.local.sh if it exists
Merge pull request #6 from Tahi-project/add_local_shell_init

Source $HOME/.local.sh if it exists
Merge pull request #5 from Tahi-project/add_github_gitconfig

Add gitconfig settings from Github.app
Merge pull request #3 from Tahi-project/remove_git_author_info

Remove author-specific information from gitconfig
Add Homebrew cask version of Firefox to path for Selenium
Merge pull request #4 from Tahi-project/add_firefox_bin_to_path

Add Homebrew cask version of Firefox to path for Selenium
Add optional local gitconfig