Updates README

Author: seanhenry

MockGeneratorTests/IOSpy.swift

@@ -19,4 +19,4 @@ class IOSpy: IO {
         invokedCreateFileParametersList.append((path, data, attr))
         return stubbedCreateFileResult
     }
-}
+}

MockGeneratorTests/ResolverSpy.swift

@@ -19,4 +19,4 @@ class ResolverSpy: Resolver {
         invokedResolveParametersList.append((element, ()))
         return stubbedResolveResult
     }
-}
+}

README.md

@@ -1,7 +1,7 @@
 # Swift Mock Generator Xcode Source Editor Extension
 ![Mock Generator Icon](readme/AppIcon_256.png)
 
-An Xcode extension (plugin) to generate [spy](#what-is-a-spy), [stub](#what-is-a-stub), [dummy](#what-is-a-dummy), and [partial spy](#what-is-a-partial-spy) classes automatically.
+An Xcode extension (plugin) and command line tool to generate [spy](#what-is-a-spy), [stub](#what-is-a-stub), [dummy](#what-is-a-dummy), and [partial spy](#what-is-a-partial-spy) classes automatically.
 
 ![Xcode mock generator](readme/XcodeMockGenerator.gif)
 
@@ -18,6 +18,26 @@ An Xcode extension (plugin) to generate [spy](#what-is-a-spy), [stub](#what-is-a
 - Go to `System Preferences -> Security & Privacy -> Privacy -> Automation` and make sure `Swift Mock Generator` is enabled.
 - Open Xcode
 
+## Sandboxing
+
+This extension is fully sandboxed which means you need to give permission to read your project files before using it.
+
+### Give permission when automatically detecting the project path
+
+- Open the companion app.
+- Press "Give permission to read directory".
+- Select the directory and press "Grant permission".
+- In Xcode, generate your test double.
+
+### Give permission when manually choosing the project path
+
+- Open the companion app.
+- Press the select directory button.
+- Select the directory and press "Open".
+- In Xcode, generate your test double.
+
+**Please note if using manual project paths before v0.25 you will have to select your project path again.**
+
 ## How to create a new Swift test double
 
 - Create an empty class inheriting from a class or protocols that you wish to mock.
@@ -47,6 +67,18 @@ The mock generator will replace anything that is currently in your class with th
 
 Undo is supported for Xcode plugins but you're safer to use a version control system such as `git` in the event of unexpectedly generating a test double.
 
+## Using the command line tool
+
+For convenience, create a symbolic link to the CLI.
+
+```
+$ ln -s "/Applications/Swift Mock Generator for Xcode.app/Contents/MacOS/genmock" /usr/local/bin/genmock
+```
+
+Use `$ genmock --help` for a list of options.
+
+See how this project generates its mocks [here](https://github.com/seanhenry/SwiftMockGeneratorForXcode/blob/master/genmocks.sh).
+
 ## Features
 
 | Feature | Supported |