Remove workspace and update tests and docs.

Mobile Buy SDK.xcworkspace/contents.xcworkspacedata

-<?xml version="1.0" encoding="UTF-8"?>
-<Workspace
-   version = "1.0">
-   <FileRef
-      location = "group:Mobile Buy SDK/Mobile Buy SDK.xcodeproj">
-   </FileRef>
-</Workspace>

README.md

@@ -90,9 +90,9 @@ Consult the [Usage Section](https://docs.shopify.com/mobile-buy-sdk/ios/integrat
 
 ### Building the SDK
 
-Clone this repo or download as .zip and open `Mobile Buy SDK.xcworkspace`.
+Clone this repo or download as .zip and open `Mobile Buy SDK.xcodeproj`.
 
-The workspace includes the Mobile Buy SDK project and the sample app projects. The sample apps can also be opened outside the workspace with the `.xcodeproj` files found in the sample app folders. However, if you need to use breakpoints or inspect methods in the SDK, run the sample apps from the workspace.
+The workspace includes the Mobile Buy SDK project.
 
 ### Mobile Buy SDK Targets and schemes
 

Scripts/run_tests.sh

-xcodebuild test -workspace "Mobile Buy SDK.xcworkspace" \
+xcodebuild test -project "../Mobile Buy SDK/Mobile Buy SDK.xcodeproj" \
 -scheme "Mobile Buy SDK Tests" \
 -sdk iphonesimulator \
 -destination 'platform=iOS Simulator,name=iPhone 6,OS=9.0'