Add links to INSTALL.md

CONTRIBUTING.md

@@ -30,6 +30,8 @@ We are looking for _documentarians_ to:
 
 ## Integrate into your environment
 
+First, [set up a dev environment](https://github.com/coralproject/talk/blob/master/INSTALL.md). Please let us know how this goes!
+
 Talk is designed to integrate into existing environments in a variety of ways:
 
 * [Auth integrations](https://github.com/coralproject/talk/wiki/Security#authentication-strategies)
@@ -42,6 +44,8 @@ If you are writing custom integration code in your fork of Talk, please consider
 
 ## Write some code
 
+First, [set up a dev environment](https://github.com/coralproject/talk/blob/master/INSTALL.md). Please let us know how this goes!
+
 ### Build a New Feature / Plugin
 
 Talk is beginning life as a Commenting Platform, but is architected to support many varieties of community engagement. 

README.md

@@ -8,6 +8,13 @@ See our [Contribution Guide](https://github.com/coralproject/talk/blob/master/CO
 
 ## Usage
 
+### Installation
+
+To set up a development environment or build from source, see [INSTALL.md](https://github.com/coralproject/talk/blob/master/INSTALL.md).
+
+To launch a Talk server of your own from your browser without any need to muck about in a terminal or think about engineering concepts, stay tuned. We will launch [our installer](https://github.com/coralproject/talk-install) shortly!!
+
+
 ### Configuration
 
 The Talk application requires specific configuration options to be available