Add exclude param to documentation (#41)

README.md

@@ -20,6 +20,7 @@ npm install react-native-unimodules
 
 - Go back to the `ios` directory and open your Podfile, make your Podfile look [like this one](https://gist.github.com/sjchmiela/6c079f2173938a9a61a7c6f053c45000).
   - If you need to customize the path to node_modules, for example because you are using yarn workspaces, then you can pass in a param for this: `use_unimodules!(modules_paths: ['./path/to/node_modules'])`
+  - If you need to exclude some of the unimodules that you are not using but they got installed by your other dependencies (like `expo`), then you can pass in `exclude` param for this. For example, if you want to exclude `expo-face-detector`, you may want to use this: `use_unimodules!(exclude: ['expo-face-detector'])`
 - Run `pod install` again
 - Update your `AppDelegate.h` and `AppDelegate.m` according to [this diff](https://gist.github.com/brentvatne/94960dacb343310b76be9cc157d90049/revisions).
   - If you use [`react-native-navigation`](https://github.com/wix/react-native-navigation), you will need to use its `bridgeManagerDelegate` option [like in this diff](https://gist.github.com/brentvatne/67909ec442121de22c9b81c629a99aa6).
@@ -58,6 +59,7 @@ In order to submit your app to the App Store, you will need to eventually add th
 - At the top of `android/settings.gradle`, add `apply from: '../node_modules/react-native-unimodules/gradle.groovy'` and then on the next line add `includeUnimodulesProjects()`.
 - Add `apply from: '../../node_modules/react-native-unimodules/gradle.groovy'` anywhere in `android/app/build.gradle` and then `addUnimodulesDependencies()` inside `dependencies {}` block.
 - If you need to customize the path to node_modules, for example because you are using yarn workspaces, then you can pass in a param `modulesPaths` for both of these functions: `includeUnimodulesProjects([modulesPaths: ['./path/to/node_modules']])`, `addUnimodulesDependencies([modulesPaths: ['./path/to/node_modules']])`
+- If you need to exclude some of the unimodules that you are not using but they got installed by your other dependencies (like `expo`), then you can pass in `exclude` param for this. For example, if you want to exclude `expo-face-detector`, you may want to use this: `addUnimodulesDependencies([exclude: ['expo-face-detector']])`
 - You can also customize the configuration of the unimodules dependencies (the default is `implementation`, if you're using Gradle older than 3.0, you will need to set `configuration: "compile"` in `addUnimodulesDependencies`, like: `addUnimodulesDependencies([configuration: "compile"])`)
 - We recommend using Java 1.8, you can set this in `android/app/build.gradle` [like this](https://github.com/expo/expo/commit/e175f870418fc69e8c129168118264439d73d7cc).
 - Update `minSdkVersion` in `android/build.gradle` to `21`.