Created SC1113 (markdown)

SC1113.md

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+## Use #!, not just #, for the shebang.
+
+### Problematic code:
+
+```sh
+# /bin/bash
+echo "Hello World"
+```
+
+### Correct code:
+
+```sh
+#! /bin/bash
+echo "Hello World"
+```
+### Rationale:
+
+You appear to be specifying a shebang, but missing the bang (i.e. `!`). The shebang should always be on the form `#!/path/shell`.
+
+### Exceptions:
+
+None.