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* Add section about testing
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README.md

@@ -1,4 +1,5 @@
 [![npm](https://img.shields.io/npm/v/@kredits/contracts.svg)](https://www.npmjs.com/package/@kredits/contracts)
+[![Build Status](https://drone.kosmos.org/api/badges/kredits/contracts/status.svg)](https://drone.kosmos.org/kredits/contracts)
 
 # Kredits Contracts
 
@@ -56,6 +57,16 @@ If you need to fund development accounts with devchain coins:
 
     $ npm run fund # or hardhat fund --network localhost
 
+## Specs / Testing
+
+With a local development chain running:
+
+    $ hardhat test
+
+If you add or change contract code, please make sure to add and/or adapt tests
+accordingly. Don't worry, it's easy! You can use existing tests as a template
+for new ones.
+
 ## Contract architecture
 
 We use the [OpenZeppelin hardhat