Code Review_shanshan

[zhaoss99]

 Thank you very much for clarifying the branch, it is much clearer than before.
 Noticing your Readme.md file in branch master, I’m so glad to see that you’ve add “How to Run the App” module.
 For every branch, you’ve modified the Readme.md file to explain what the branch is used for.
 I’m so sorry I can’t do the testing work since your files are so big that I got a warning when I download them from Google Drive.
 you’ve made a big progress which can be seen in your path:
“objectDetection/android/src/main/SpeakEyE/app/” So I really look forward for your last presentation, it must be excellent.