Starting point for new repo README.

Author: hctorres

README.md

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+# SWM
+
+The same mini-app is written in multiple programming languages systems. 
+
+TODO: Add overview of mini-app. 
+
+## Versions
+
+TODO: Create valid links to files /  directories. 
+- [C](swm_c)
+    - [Plain C](/swm_c/shallow_swap.c)
+    - OpenACC
+        - [swap](/swm_c/shallow_swap.acc.c)
+        - [tile](/swm_c/shallow_swap.acc.Tile.c)
+- [Python](swm_python)
+    - numpy
+    - gt4py 
+- [Julia](swm_julia)