add downloads/ in Distribution / packaging
Added recommended gitignore rules from Craft

Signed-off-by: Ryan Shrum <ryan@ehousestudio.com>
Add REALbasic
Removing .DS_Store rule as it is included in global rules

Signed-off-by: Ryan Shrum <ryan@ehousestudio.com>
Adding cache files and binary files
Typo fix + Plugin configuration + UI specific file
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.
added: rules for ingnoring precompiled headers for C/C++
Merge pull request #1183 from Ironholds/patch-1

Add *.Rproj for RStudio users
Tidy up the JetBrains comments

Amends #1165
Merge branch 'fix-1165'
Rename RB to reflect current software naming
Merge branch 'fix-1120'
Remove legacy Symfony template

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.
Merge pull request #1184 from starrify/master

added: rules for ignoring precompiled headers for C/C++
Merge pull request #1106 from ryanshrum/master

Added recommended gitignore rules from Craft
Update Dart.gitignore

Add in rule for .buildlog
Merge pull request #1191 from cnbuff410/patch-1

Update Dart.gitignore
Rename Symfony2.gitignore to Symfony.gitignore

The old Symfony.gitignore has been removed (a383e55) as Symfony 1 is no longer
supported.
Update Symfony.gitignore to support 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.