Update Contribution Process

Documentation/source/Readme/Contribution Process

@@ -83,5 +83,57 @@ If you plan to review (or just establish a remote backup of your work), push the
 Committing Multiple Repositories (repo init/sync)
 *************************************************
 
+#. Configure the token of the global environment.
+
+  repo config --global repo.token {TOKEN}
+
+The token is generated by choosing **Settings > Security Settings > Private Token** on Gitee. Example:
+
+  repo config --global repo.token 211XXXXXXXXXXXXXXXXXXXXXXXX
+
+#. Create an issue under any repository to be modified on Gitee, and record the issue number (for example, #I1TVV4 in the following figure). (The issue provides a function similar to changeID of Gerrit and is used to associate multiple repositories to be modified. Skip this step if modification of multiple repositories is not involved.)
+
+#. Create a branch in the local code workspace, modify the code, and commit the changes.
+
+  repo start branchname --all
+
+After the code is modified, run the following command in multiple repositories:
+
+  git add .
+  git commit -m "xxxxxx"
+
+Alternatively, use the repo tool to batch add or commit the changes in the root directory of the code project:
+
+  repo forall -c 'git add .'
+  repo forall -c 'git commit -m "xxxxxx"'
+
+#. Push the code. (repo upload is not supported.)
+Specify whether to directly generate a pull request (PR) during code push. The value False indicates that a PR is not directly generated and needs to be manually generated in the fork warehouse. The value True indicates that a PR is generated when the code is pushed to the fork repository.
+
+  repo config repo.pullrequest {True/False}
+
+For example, if the PR is generated when the push code is selected, run the following command:
+
+  repo config repo.pullrequest True
+
+Run the following command to push the code:
+
+  repo push --br={BRANCH} --d={DEST_BRANCH} --content={PR_CONTENT}
+
+BRANCH indicates the local branch, DEST_BRANCH indicates the destination branch (trunk branch), which is usually master, and PR_CONTENT indicates the PR description. If multi-repository committing is involved, the issue number must be entered. Example:
+
+  repo push --br="20200903" --d="master" --content="#I1TVV4"
+
+On the editing page displayed, open the comment tags for the repository, branch, and commit.
+
+Save the settings and exit. The repo tool automatically pushes the local branch to the remote fork repository (creates a fork repository if there is no fork repository) and generates a PR.
+
+The tool automatically associates the PR with the issue.
+
+Creating a Pull Request
+***********************
+Access the fork repository on Gitee, click the button for creating a PR, and select the myfeature branch to generate a PR. (Skip this step if a PR has been automatically created using the repo tool.)
+
+For details, visit https://gitee.com/help/articles/4128.