Made changes to the title
Changed gilt to git in the main body of text
Changed gilt to git in the command examples
Replaced "chunk" by "commit" in the main body of text
Revert "Replaced "chunk" by "commit" in the main body of text"

This reverts commit b6800e2a343785afb39c0aeff6350a13dfbef9dd.
Made changes to the commands in first two sections
Corrected the "work chunks" and "chunks" to "commit" in the main body of text
Corrected the commands for commits
Made changes to the final section on remote repositories