Merge branch 'master' of https://github.com/mobile-insight/mobileinsi…

…ght-widgetdemo

README.md

@@ -8,13 +8,19 @@ This repository includes the codes to build MobileInsight widget demo version. I
 After installing [MobileInsight Widget Demo](https://github.com/mobile-insight/mobileinsight-widgetdemo/releases) and [MobileInsight Mobile](https://github.com/mobile-insight/mobileinsight-mobile/releases) on your Android phone, follow the following steps to use the application:
 
 1. Press and hold any empty space on the home screen to choose **Widgets**.
-2. Selcet a widget from the **MI Widget** list and drag to the home screen.
+2. Select a widget from the **MI Widget** list and drag to the home screen.
 3. Repeat **Step 2** if you want more widgets.
 4. Run **MobileInsight** and the corresponding demo plugin (See **Widget Intro**).
 5. Go back to the home screen. The widget will show results.
 
 Refer to the main page of **MI Widget** application for more information.
 
+## How to compile
+
+This repo is an [Android Studio](https://developer.android.com/studio/index.html) project. You can directly import the project after installing Android Studio. After importing the project, you can modify codes and build your own application.
+
+This project builds on `constraint-layout:1.0.2`, which can be installed by [SDK Manager](https://developer.android.com/studio/intro/update.html).
+
 ## How to Contribute
 
 We love pull requests and discussing novel ideas. You can open issues here to report bugs. Feel free to improve MobileInsight and become a collaborator if you are interested.
@@ -23,4 +29,4 @@ The following Slack group is used exclusively for discussions about developing t
 
 + Dev Slack Group: https://mobileinsight-dev.slack.com
 
-For other advanced topics, please refer to the wiki and the [MobileInsight website](http://mobileinsight.net).
+For other advanced topics, please refer to the wiki and the [MobileInsight website](http://mobileinsight.net).