Chapter1 and Index
Updates to Ex1.2, 1.3, 1.4, 1.5
Remove the extra stuff
Adding see also sections, see also , c-better-explain c-suggest-improve.
Writing the title for exercises
Fixing the directives.
see-also directive clean up

Updating the contents
Updates to exercises.
Explaining 2.2
see also directives.
C Programming sections
Updated section 1.5 with explanation and added directives
Adding a new CSS and update runcode
Remove the exe file