Improve README
Fixed headings in README
Add installation hints to README
More details install instructions for README
Check git requirements
replace sign for other branches
Fixed dir colours condition
New signs for prompt
Star prompt for linux
Disable welcome message caused lost bugs
Swtich alert arguments in notifications
Squashed 'git-bash-completion/' content from commit d1d2502

git-subtree-dir: git-bash-completion
git-subtree-split: d1d25024c4a68f7724a1876598664f13c01aac19
Merge commit 'c82d520049f7bc116105af4f2c92e8fc0f86423f' as 'git-bash-completion'
Add git completion as subtree
Add logout message
Add beep sound and linux support for say with espeak.