Git initialiation for submodules

gistfile1.txt

Git Submodules
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STRUCTURE

-- Main Branch
  - App (Second Branch)
  - Frontend (Third Branch)
  
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1. Clone the repository and checkout to the Main Btanch.
2. at the main branch, use command line and type this command to initialize the submodule:
    `git submodule update --init --recursive`
3. Go to the App & Frontend folder and checkout it to the representative branch. (App belongs to Second Branch / App = wordpress ).

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- You need to check the status of each submodule folder using 
      `git status`
- If you see any "HEAD" text in the status, you need to run the number 3 process and at this point make sure you didn't have create any changes first. If this happened, please merge it to the representative branch.