Update README.md

README.md

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-# Branch_Setup_TM
-This is a composite action for branch and action setup used in Trained-Models repo
+# Branch Setup and Issue Parser
+
+This is a composite action used in the workflow of updating a model. This process is evident in Nobrainer's Trained-Models repository action course.
+
+In addition, this composite action is used to compress the amount of code in a single workflow, and avoid duplication with the first workflow in Trained-models: Add a new model.
+
+In summary, this action will:
+
+Create a new branch for the issue linked.
+Parse the issue form's information/text fields.
+Save the parsed information to output variables to be used within the context of the calling workflow.