Add a README.md

Author: kenrap

README.md

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+# zig2tuple
+
+This FreeBSD ports tool assists in the creation of Zig ports by recursively scanning `.zon` files in Zig projects by finding dependencies to be added in the port Makefiles for porter convenience.
+
+## How to use it?
+
+Either by calling zig2tuple directly: `zig2tuple <path_to_project>`
+
+Or by adding `USES=zig` to a port and then running `make make-zig-tuple`, which will invoke the tool under the hood.
+
+## Requirements For New Issues:
+
+* Please keep each issue to one problem only.
+* Do not stack problems in a single issue.
+* Do not request port build testing.