The Objective-C and Swift gitignore files are missing `*.xccheckout`
and `*.xcscmblueprint`, but these are still included in the Xcode
gitignore. This commit synchronises the three files.

The files themselves contain information about the user's local
source control status and shouldn't be included in most Xcode
repositories.

`*.xcuserstate` appears to always be contained in `xcuserdata/`
which is already ignored.

Use the exact CC-0 license text

Rename 'IPython Notebook' comment to 'Jupyter Notebook'

Nanoc: Fix capitalisation + config filename

Update ExtJs.gitignore

ignore Visual Studio 6 workspace file

see e.g.
http://stackoverflow.com/a/1530193
https://msdn.microsoft.com/en-us/library/aa241721(v=vs.60).aspx

Removed LaunchSettings.json from being committed

ignore public/storage for laravel 5

Ref: https://github.com/laravel/laravel/blob/master/.gitignore#L2

Update/opencart

Extend C to ignore Visual Studio artifacts

Include shared settings, according to official docs

Added kernel module compilation results

Add .externalNativeBuild to Android gitignore

Add vendor folder to Go.gitignore

Add support for Cake.Net

Update Node.gitignore

Add `*.tgz`, the output of `npm pack`, or other build-steps.

Add .nfs files to Linux.gitignore

Added a few missed files from kernel compilation results

Adds kernel module compile to the ignore list.

Cake.Net creates a tools folder at the root which contains downloaded packages and should not be checked in.

Update Erlang.gitignore

/ebin can't be simply ignored because *.app should be put here.

[Erlang Applications](http://erlang.org/doc/design_principles/applications.html)
> 8.4  Directory Structure
> ebin - Contains the Erlang object code, the beam files. The .app file is also placed here.

added VS code coverage files