Adds ex7,8,9
Adds ex10,11
Adds ex12,13,14
Adds ex15
Adds ex16 partial
Adds ex16 remaining
Adds left out file in ex16
Adds ex17
Adds ex18
Adds ex19
Adds ex20
Adds ex21
Adds ex24 and ex25
Adds ex26
Mods the readme file for testing new git config