README.md in transaction_timestamps-0.1.0 vs README.md in transaction_timestamps-0.2.0

@@ -2,10 +2,14 @@
 
 Transaction timestamps sets a Rails model's `created_at` and `updated_at` timestamps to the database transaction time, 
 rather than the current time. This is useful for aligning the timestamps of different models saved within a single
 transaction to be exactly the same.
 
+## Requirements
+
+`transaction_timestamps` depends on Rails >= 4.2
+
 ## Installation
 
 Add this line to your application's Gemfile:
 
 ```ruby
@@ -31,9 +35,11 @@
 Note: For postgresql databases, the timestamp is generated from a SQL query for the actual transaction time. For other
 databases (where querying the transaction time is not supported), the current system time as of the first timestamping
 event in the transaction is used.
 
 ## Contributing
+
+Install all depedencies with `appraisal install`. Run tests on all supported systems with `appraisal rspec`.
 
 Bug reports and pull requests are welcome on GitHub at https://github.com/coupa/transaction_timestamps.
 
 
 ## License