Added instructions for the alias command

Created the alias.md file, containing some examples of the use of
aliases. Hope you like.
Fixing arbitrary markdown

Reformated for fixing the arbitrary markdown
Added forceful caching (thus added --update flag). Added --random,
--list flags
Sometimes im really silly -_-
Updating the git page

This page might seem slightly big for a project called tl;dr, but git
has tons of commonly used options and I've kept all descriptions as
short but meaningful as possible (within 80 characters)
Removing unnecessary lines from the git page

Since the last change, I don't think we need to include git 'command' or
git version
Remove `md` highlighting as it isn't for Markdown

True story. :(
Improve quick dev notes

`$` sign removes misunderstanding of commands.
Avoid slang
Removing unnecessary git commands

Removing less frequently used git commands: reset and blame to make tldr pages serve their purpose of being short ;)
Merge pull request #143 from ZDroid/contributing-md

Improve CONTRIBUTING.md
Merge pull request #142 from chirag64/master

Updating the git page by adding some git commands and removing previous unnecessary ones
Merge pull request #98 from rnas/master

Added instructions for the alias command
wget: normalise tokens (lowercase + underscores)
New page for date (display only)

Fix #15. Based on #32, thanks @shrayas.
Merge branch 'master' of https://github.com/rprieto/tldr
Updated for new model of pages and such
telnet
Merge pull request #144 from nguyenchr/telnet

telnet
add nc