Update readme

README.md

@@ -31,11 +31,23 @@ RGeo objects can be embedded in where clauses.
 
 The adapter requires PostgreSQL 9.0+.
 
-#### Version 4.x supports ActiveRecord 5.0+
+Gemfile:
+
+```ruby
+gem 'activerecord-postgis-adapter'
+```
+
+Gemfile for JRuby:
+
+```ruby
+gem 'activerecord-postgis-adapter'
+gem 'activerecord-jdbcpostgresql-adapter', '~> 1.3.9'
+gem 'ffi-geos'
+```
 
-_Version 4.0 is is beta_
+_JRuby support for Rails 4.0 and 4.1 was added in version 2.2.0_
 
-See https://github.com/rgeo/activerecord-postgis-adapter/pull/213
+#### Version 4.x supports ActiveRecord 5.0+
 
 Requirements:
 
@@ -45,28 +57,16 @@ Ruby 2.2.2+, JRuby
 PostGIS 2.0+
 ```
 
-Gemfile:
-
-```ruby
-gem 'activerecord-postgis-adapter', '~> 4.0.0.beta'
-```
-
 #### Version 3.x supports ActiveRecord 4.2
 
 Requirements:
 
 ```
-ActiveRecord 4.2+
+ActiveRecord 4.2
 Ruby 1.9.3+, JRuby
 PostGIS 2.0+
 ```
 
-Gemfile:
-
-```ruby
-gem 'activerecord-postgis-adapter'
-```
-
 #### Version 2.x supports ActiveRecord 4.0.x and 4.1.x
 
 _If you are using version 2.x, you should read [the version 2.x README](https://github.com/rgeo/activerecord-postgis-adapter/blob/2.0-stable/README.md)_
@@ -79,22 +79,6 @@ Ruby 1.9.3+, JRuby
 PostGIS 2.0+
 ```
 
-Gemfile:
-
-```ruby
-gem 'activerecord-postgis-adapter'
-```
-
-Gemfile for JRuby:
-
-```ruby
-gem 'activerecord-postgis-adapter'
-gem 'activerecord-jdbcpostgresql-adapter', '~> 1.3.9'
-gem 'ffi-geos'
-```
-
-_JRuby support for Rails 4.0 and 4.1 was added in version 2.2.0_
-
 #### Version 0.6.x supports ActiveRecord 3.x
 
 _If you are using version 0.6.x, you should read [the version 0.6.x / 2.x README](https://github.com/rgeo/activerecord-postgis-adapter/blob/2.0-stable/README.md)_
@@ -474,6 +458,6 @@ a head start on the implementation.
 
 ## License
 
-Copyright 2015 Daniel Azuma, Tee Parham
+Copyright Daniel Azuma, Tee Parham
 
 https://github.com/rgeo/activerecord-postgis-adapter/blob/master/LICENSE.txt