The doc:rails application rake task needs this README.

Closes #8804 [ci skip]

Improve StrongParameters documentation [ci skip]

Place article name in the beginning of guides page title

These warnings were actually a bug in Ruby 2.0, the accessors should not
be raising such warnings, they are only meant for ivars.

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Revert "fix warnings in Ruby 2.0"

This reverts commit 26702a6d.

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Revert "Merge pull request #8282 from arunagw/warning_removed_for_ruby2"

This reverts commit f63d6544, reversing
changes made to 3a890681.

Access ivars via instance reader methods for consistency

Refactor ShowExceptions' #call to use def-rescue instead of begin-rescue

Remove begin-rescue in favor of def-rescue

Introduce ./bin for your app's executables: bin/bundle, bin/rails, bin/rake

Introduce ./bin for your app's executables: bin/bundle, bin/rails, bin/rake. Executable scripts are versioned code like the rest of your app. To generate a stub for a bundled gem: 'bundle binstubs unicorn' and 'git add bin/unicorn'

All the valids parameters for libpq are used.

See http://www.postgresql.org/docs/9.1/static/libpq-connect.html for the
full list

Fixes #8784

masgn and response variable

Refactor DebugExceptions

Refactor Journey::Routes

* prefer do-end for multiline blocks
* prefer or-equals over returns with checks

doesn't work with rubinius

Rubinius returns a boolean after such assingment
response = (_, headers, body = @app.call(env))

see https://github.com/rubinius/rubinius/issues/2117

get rid of a local variable

Fix error raised when assigning NaN to an integer column

Also covers any non-castable case by returning nil, which
is in-line with the intention of the former implementation,
but covers the odd cases which respond to to_i but raise
an error when it's called, such as NaN, Infinity and -Infinity.

Fixes #8757

* dependencies/autoload
* concern
* deprecation

refactor the naming within plugin new generator