added new commands

doc/gitlab-basics/basic-git-commands.md

@@ -34,6 +34,8 @@ You'll see your changes in red when you type "git status".
 ```
 git add CHANGES IN RED
 git commit -m "DESCRIBE THE INTENTION OF THE COMMIT"
+or
+git commit -am "DESCRIBE THE INTENTION OF THE COMMIT WITH AN ADDITIONAL MESSAGE"
 ```
 
 ### Send changes to gitlab.com

doc/gitlab-basics/command-line-commands.md

@@ -72,3 +72,11 @@ You will be asked for an administrator’s password.
 ```
 sudo
 ```
+
+### Tell where you are
+```
+pwd
+```
+
+### Open new command line window
+Press `command + t` on your keyboard.