Update Contributing.md [ci skip]

rgeo · May 27, 2014 · 98f08b1 · 98f08b1
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commit 98f08b1
Showing 1 changed file with 15 additions and 6 deletions.
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -6,16 +6,25 @@ Fork the repo:
 
 Set up your test database:
 
-`createdb postgis_adapter_test`
+```sh
+createdb postgis_adapter_test
+createuser -s postgres
+psql postgis_adapter_test
+=# CREATE EXTENSION postgis;
+```
 
-`createuser -s postgres`
+Make sure the tests pass:
 
-`psql postgis_adapter_test`
+`rake`
 
-`=# CREATE EXTENSION postgis;`
+Run tests against both ActiveRecord 4.0 and 4.1 test gemfiles:
 
-Make sure the tests pass:
+```
+BUNDLE_GEMFILE=./travis/ar40.gemfile bundle
+BUNDLE_GEMFILE=./travis/ar40.gemfile rake
 
-`rake`
+BUNDLE_GEMFILE=./travis/ar41.gemfile bundle
+BUNDLE_GEMFILE=./travis/ar41.gemfile rake
+```
 
 Make your changes and submit a pull request.