From cf732392c8cc951c47c72ce5b2aca9ee5b1abb16 Mon Sep 17 00:00:00 2001
From: apidesigner <z@goodapi.co>
Date: Mon, 30 Jan 2017 10:59:32 +0000
Subject: [PATCH] Updates core-principles/version-control-system.md

Auto commit by GitBook Editor
---
 SUMMARY.md                                | 2 ++
 core-principles/contract.md               | 4 ++++
 core-principles/version-control-system.md | 2 ++
 3 files changed, 8 insertions(+)
 create mode 100644 core-principles/contract.md
 create mode 100644 core-principles/version-control-system.md

diff --git a/SUMMARY.md b/SUMMARY.md
index 8a13c37..0dd063b 100644
--- a/SUMMARY.md
+++ b/SUMMARY.md
@@ -5,4 +5,6 @@
   * [API First](core-principles/api-first.md)
   * [OpenAPI Specification](core-principles/openapi-specification.md)
   * [Apiary](core-principles/apiary.md)
+  * [Version Control System](core-principles/version-control-system.md)
+  * [Contract](core-principles/contract.md)
 
diff --git a/core-principles/contract.md b/core-principles/contract.md
new file mode 100644
index 0000000..8eeb7eb
--- /dev/null
+++ b/core-principles/contract.md
@@ -0,0 +1,4 @@
+# Contract 
+Approved API Design, represented by its API Description, MUST represent the **contract** between API stakeholder, implementers and consumers.
+
+Any change to an API MUST be accompanied by a relevant change in the contract (API Description). 
\ No newline at end of file
diff --git a/core-principles/version-control-system.md b/core-principles/version-control-system.md
new file mode 100644
index 0000000..b483ae9
--- /dev/null
+++ b/core-principles/version-control-system.md
@@ -0,0 +1,2 @@
+# Version Control System
+Every API description SHOULD be stored in an Version Control System (Bitbucket, GitHub). Where possible the API description SHOULD stored in the **same** repository as the API implementation.
\ No newline at end of file