Update instructions

Author: smittytone

README.md

@@ -1,6 +1,6 @@
 # The Electric Imp BlinkUp SDK for iOS #
 
-This repo contains the Electric Imp BlinkUp™ SDK for iOS that it is made available to Electric Imp customers. As such it mirrors the downloadable files hosted by the [Dev Center](https://developer.electricimp.com/manufacturing/sdkdocs), but in a form that allows customer developers to add the SDK to their app project repos as a sub-module. This will allow them to pull in SDK changes manually at build time, or automatically through their own build scripts.
+This repo contains the Electric Imp BlinkUp™ SDK for iOS as it is made available to Electric Imp customers. It mirrors the downloadable files hosted by the [Dev Center](https://developer.electricimp.com/manufacturing/sdkdocs), but in a form that allows developers to add the SDK to their app project repos as a sub-module. This will allow them to pull in SDK changes manually at build time, or automatically through their own build scripts.
 
 ## Sub-module Installation ##
 
@@ -10,7 +10,7 @@ To install the SDK as a sub-module, navigate to your project repo directory and
 git submodule add https://github.com/electricimp/BlinkUpSDK-iOS.git
 ```
 
-This will add the SDK repo as a sub-module referenced through the file `.gitmodules`, which will be added if it is not present. You can now push your local repo to its origin:
+This will add the SDK repo as a sub-module referenced in the file `.gitmodules`, which will be added if it is not yet present. You can now push your local repo to its origin:
 
 ```
 git push origin <working_branch>
@@ -22,17 +22,19 @@ To update the sub-module contents at any time, eg. in a build script, call:
 git submodule update --remote
 ```
 
-**Note** The BlinkUp SDK repo is considered solely for consumption by a customer’s project. We will not be accepting pull requests made to the BlinkUp SDK repo. If you have support or related questions concerning the SDK, please submit them through your customer account’s [Electric Imp Support access](https://support.electricimp.com/).
-
 ## BlinkUp SDK Installation ##
 
-To understand how to add the BlinkUp SDK files to your app project, please see the relevant documentation included with each of the SDK:
+To learn how to add the BlinkUp SDK files to your app project, please see the relevant documentation included with each of the SDK:
 
-- [iOS SDK Installation](https://github.com/electricimp/BlinkUpSDK-iOS/blob/master/sdk/Documentation/html/index.html) (HTML)
+- [iOS SDK Installation](./sdk/Documentation/html/index.html) (HTML)
 
 ## Release Notes and Known Issues ##
 
-Please see the [Dev Center SDK page](https://developer.electricimp.com/manufacturing/sdkdocs), or the SDK documentation in this repo.
+Please see the [Dev Center SDK page](https://developer.electricimp.com/manufacturing/sdkdocs), or the [SDK documentation in this repo](./sdk/Documentation).
+
+## Pull Requests ##
+
+The BlinkUp SDK repo is considered solely for consumption by a customer’s project. We will not be accepting pull requests made to this repo. If you have support or related questions concerning the SDK, please submit them through your customer account’s [Electric Imp Support access](https://support.electricimp.com/).
 
 ---