Initial commit of sql-update code and readme.
Correcting spelling, formatting and other errors in the Readme.md file.
Cleanup

1. Added --opt and removed redundant switches from mysqldump command
2. Clarified what was happening during the running of the external
   global-sql-update and ~/sql-update files.
3. Changed some wording for echo statements.
Merge pull request #1 from i1tech/master

Initial commit of sql-update code and readme.