Created SC2273 (markdown)

SC2273.md

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+## Sequence of ===s found. Merge conflict or intended as a commented border?
+
+### Problematic code:
+
+```sh
+=======
+```
+
+### Correct code:
+
+Either resolve the merge conflict, or use `# =======` for a border
+
+### Rationale:
+
+ShellCheck found a series of `=======`s. If this was supposed to be a border or separator, use a comment.
+
+
+However, it could also be left behind from a source control merge conflict:
+
+```sh
+<<<<<<< HEAD
+echo "Goodbye World"
+=======
+echo "Hello World!"
+>>>>>>> mybranch
+```
+
+In this case, make sure the merge conflict is correctly resolved, and all the markers removed.
+
+### Exceptions:
+
+None
+
+### Related resources:
+
+* Help by adding links to BashFAQ, StackOverflow, man pages, POSIX, etc!