Update Jekyll.gitignore

Create GitBook.gitignore

Ignore user-specific rproj files instead of project-specific ones

Laravel4 is the current standard.

This resolves the name with the custom Laravel.gitignore file in the
gitignore.io project. If support for Laravel3 is desired, it should be done in
a new file: "Laravel3.gitignore

Closes #1196

.Rproj is fine - it's .Rproj.user that needs to go.

[Sublime Text] Adding cache files and binary files

add downloads/ in Distribution / packaging

Add .gitignore rules for Symfony3

Symfony3 (and some versions of Symfony2) come with a new directory structure.
This updated version of Symfony.gitignore supports this new directory structure
as well as the old one.

The old Symfony.gitignore has been removed (a383e550) as Symfony 1 is no longer
supported.

Update Dart.gitignore

Add in rule for .buildlog

Added recommended gitignore rules from Craft

added: rules for ignoring precompiled headers for C/C++

Quoting from http://symfony.com/legacy

  The symfony 1.x branch of the framework started in 2005 and the latest stable
  version and long term support release is symfony 1.4. As of November 2012,
  symfony 1.x is not maintained anymore and you are encouraged to have a look
  at Symfony2 for any new projects.

Amends #1165

Add *.Rproj for RStudio users

RStudio - the only real R IDE, and an incredibly commonly used environment for R, particularly since it has git support - uses .Rproj files in projects, that follow the pattern projectname.Rproj. Adding *.Rproj to capture these and exclude them.

Add ebin, rel example, concrete dev mode, .rebar

add Windows shortcut files

Add ignores for bower-rails

New version of eledmac on CTAN adds new extension file

Ignore *.converted-to-* files in TeX

Fixed binary gettext files rule: .po -> .mo

ignoring new Magento 1.9 default theme

Create LyX.gitignore

Ignores *.lyx~ (crash recovery) and *.lyx# (timed autosave) files generated by LyX - the document processor.