add preview generator to mailer generator
check if ActionMailer::Preview exists
add config.action_mailer.preview_path

when rails rspec:install is run
Readme: Use an SVG badge.

That way, both badges will have the same design. Also, they'll look good even on retina displays.
Merge pull request #1196 from espadrine/patch-1

Readme: Use an SVG badge.

[ci skip]
Updated travis build scripts (from rspec-dev)
Update custom scripts to match rspec-dev changes.
Update travis matrix as well.
Merge pull request #1199 from rspec/update-travis-build-scripts-2014-10-30-for-master

Updates from rspec-dev (2014-10-30)
Use context in controller spec for scaffolds

Use `context` instead of `describe` for the valid/invalid param
contexts in the controller spec template for the scaffold generator.
This seems like it better follows BDD practices.
Merge pull request #1204 from glittershark/context-in-controller-scaffold-spec

Use context in controller spec for scaffolds
changelog for #1204
[skip ci]
Use #method syntax in controller spec, to match doc

Use 'GET #index' instead of 'GET index', etc. in the scaffold controller
spec, to match the [sample controller specs in the README][1]

[1]: https://github.com/rspec/rspec-rails#controller-specs
Use #method syntax in standalone controller spec

Use `#method` syntax in the generator for the standalone controller
spec, to match the documentation.

/cc @cupakromer
Add line in changelog for #1206 [ci skip]
Merge pull request #1206 from glittershark/controller-spec-method-syntax

Use #method syntax in controller spec, to match doc
Remove History.md

The changelog now exists at the root of the project, not at
features/Changelog.md.

[skip ci]
Merge pull request #1215 from dideler/remove-outdated-history.md

Remove History.md
Remove Upgrade.md

- It points to a non-existent location
- There's an upgrade section in the project's README

[skip ci]
Merge pull request #1216 from dideler/remove-outdated-upgrade.md

Remove Upgrade.md