Merge branch 'master' into normalizecb

* master: (61 commits)
  add tests for reset_calbacks
  Fixing build broken by this change
  Extract variable out of loop
  Updated comment to Rails 4
  Fixes NoMethodError: `alias_method_chain` when requiring just active_support/core_ext
  better error message when app name is not passed in `rails new`
  Code cleanup for ActionDispatch::Flash#call
  Fix typo: require -> requires
  Add CHANGELOG entry for #10576
  Merge pull request #10556 from Empact/deprecate-schema-statements-distinct
  Some editorial changes on the documentation.
  respond_to -> respond to in a message from AM::Lint
  specify that dom_(id|class) are deprecated in controllers, views are fine
  copy edits [ci skip]
  Fix class and method name typos
  Replace multi_json with json
  ruby -> Ruby
  Adding documentation to the automatic inverse_of finder.
  Improve CHANGELOG entry [ci kip]
  Call assume_migrated_upto_version on connection
  ...

Conflicts:
	activesupport/lib/active_support/callbacks.rb

1 files changed, 8 insertions, 4 deletions

diff --git a/guides/source/development_dependencies_install.md b/guides/source/development_dependencies_install.md
index ef622103f4..5647a4c1b7 100644
--- a/guides/source/development_dependencies_install.md
+++ b/guides/source/development_dependencies_install.md
@@ -5,6 +5,10 @@ This guide covers how to setup an environment for Ruby on Rails core development
 
 After reading this guide, you will know:
 
+* How to set up your machine for Rails development
+* How to run specific groups of unit tests from the Rails test suite
+* How the ActiveRecord portion of the Rails test suite operates
+
 --------------------------------------------------------------------------------
 
 The Easy Way
@@ -53,7 +57,7 @@ If you are on Fedora or CentOS, you can run
 $ sudo yum install libxml2 libxml2-devel libxslt libxslt-devel
 ```
 
-If you have any problems with these libraries, you should install them manually compiling the source code. Just follow the instructions at the [Red Hat/CentOS section of the Nokogiri tutorials](http://nokogiri.org/tutorials/installing_nokogiri.html#red_hat__centos) .
+If you have any problems with these libraries, you can install them manually by compiling the source code. Just follow the instructions at the [Red Hat/CentOS section of the Nokogiri tutorials](http://nokogiri.org/tutorials/installing_nokogiri.html#red_hat__centos) .
 
 Also, SQLite3 and its development files for the `sqlite3-ruby` gem — in Ubuntu you're done with just
 
@@ -93,7 +97,7 @@ $ cd actionpack
 $ bundle exec rake test
 ```
 
-If you want to run the tests located in a specific directory use the `TEST_DIR` environment variable. For example, this will run the tests of the `railties/test/generators` directory only:
+If you want to run the tests located in a specific directory use the `TEST_DIR` environment variable. For example, this will run the tests in the `railties/test/generators` directory only:
 
 ```bash
 $ cd railties
@@ -133,14 +137,14 @@ $ sudo yum install mysql-server mysql-devel
 $ sudo yum install postgresql-server postgresql-devel
 ```
 
-After that run:
+After that, run:
 
 ```bash
 $ rm .bundle/config
 $ bundle install
 ```
 
-We need first to delete `.bundle/config` because Bundler remembers in that file that we didn't want to install the "db" group (alternatively you can edit the file).
+First, we need to delete `.bundle/config` because Bundler remembers in that file that we didn't want to install the "db" group (alternatively you can edit the file).
 
 In order to be able to run the test suite against MySQL you need to create a user named `rails` with privileges on the test databases: