integration/fish: updated installation instructions

They were updated according to recent update of referenced scripts.  cd.fish was deleted, so we have to download rvm.fish only.
Merge pull request #194 from develop7/patch-1

integration/fish: updated installation instructions
add note to touch tmp/restart.txt after creating .powenv
Merge branch 'master' of github.com:rvm/rvm-site
Added a section on dependencies.

Added a section on installing dependencies.  Still working on getting rubygems installed manually.  In particular, autolibs needs to be disabled to be able to install offline.
Refine dependency rules

Reworking dependency installation rules so they work.
Finished instructions for manual rubygems

Finished instructions for manually installing rubygems offline.  If the ruby install fails to install rubygems, the only obvious way to try again is to reinstall -- which takes time.
Merge pull request #195 from rhinton/master

Updated offline install instructions
Convert about page to markdown
Converting the basics of RVM to markdown
Merge pull request #196 from qboss/master

Convert a couple of pages to markdown
Removing disable-binary switch

I can't find any mention of the "--disable-binary" switch anywhere in the code.  And it causes problems on the rubinius install (configure fails because it doesn't recognize the switch).  I also can't find it mentioned in the Ruby 1.9.3 configure script.
Merge pull request #197 from rhinton/master

Removing disable-binary switch
add a note about --ignore-dotfiles, fix #198
move presentations to markdown, add few more resources
fix removing tags from the header link id in markdown, remove the link to link in presentations header
Merge pull request #1 from rvm/master

Sync with upstream