Fix typo in markdown and re-generate git-info
help ronn make hyperlinks.

With hte manuals described in index.txt ronn will create hyperlinks of the (1) referenced words.
See http://rtomayko.github.com/ronn/ronn.1#LINK-INDEXES.
git-extras.html will now be browsable, actually anywhere else you use the referenced names ie. git-extras(1) as defined in index.txt will generate as hyperlinks in html while keeping the text versions rendereder similarly than they used to using exactly the same procedures as already documented.
Fix #127 git-ignore won't add duplicates.

As per the bug identified in #127 git-ignore would add duplicate entries in .gitignore which is redundant and should not happen.
grep will suitably verify that the entry doesn't exit but only if the file actually exists or we will get an error on stderr. check if the
file exists with test -f and that the new entry is present or alternatively just go ahead and add the new value which will create the file if it didn't exist.
Running the same command again does not add the duplicate.
Merge pull request #129 from nickl-/develop

general fixes and improvements
Merge pull request #128 from nickl-/git-extras-html-hyperlinks

help ronn make hyperlinks.
git-undo now includes -h|--hard option.

-h option allows you to undo the last commit without keeping the
changes in the local working directory. Use with care.
Updated documentation to include new option.
Add global gitignore to git-ignore output
Added git-show-tree.

See commits from all the branches plotted in a tree view.
Complete git-ignore includes global.

Did a rebase merge from the old pull request #46 which we may close now.
Yet it wasn't as simple as that in the end but all things have a resolve:
Added 2 context type arguments to specify --local or --global.
Refactored usage into functions te prevent duplication.
Capable to view and append to both global gitignore as well as the .gitignore from the working folder.
Supports all types of ignore patters including ! negated, comments as well as blank lines.
Complete documentation including several examples.
Added examples to git-commits-since
whitespace only
Added automated manual generation.

Bash script which rebuilds the indexes (index.txt and the links listed in git-extras.md) based on the collection of .md file documents avalable.
By interrogating the .md file for the documented description we null and void yet another possible consistency issue and avoid manual duplication mistakes.
Once the indexes are up to date we start from the begining of the directory listing again calling ronn on each .md to generate the man and html files as well as renaming the incerrectly name html file.

Result several incorrectly named .html documents are now removed, and all the documentation is up to date.
Documentation also updated.
The complete index of all available documents.
All documentation updated as a result from shell script.

The automated shell script now refreshed all the documentation and renamed the .1.html versions so no redundant files left.
Add docs for shorthand version of --list.
Make all bin scripts executable.
Add bash_completion for new git-ignore switches.
merge with muthasib as per pull req #114.

Pull req #114 Add -h --hard to git-undo.
Generate only a single manual.

Added the ability to pass the .md document template as argument to manning-up.sh which will only generate the single document and rename the .1.html correctly before exiting and thus not building the index and all the docs again.
Includes updated documentation.
Merge pull request #130 from nickl-/develop

general fixes and improvements pt 2