add squirrel

Author: tot0p

Squirrel/Readme.md

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+# Squirrel Hello World
+
+Squirrel is a high level imperative, object-oriented programming language, designed to be a lightweight scripting language that fits in the size, memory bandwidth, and real-time requirements of applications like video games.
+
+you can found squirrel [here](http://squirrel-lang.org/)
+
+# run the program
+
+you need to install squirrel first
+
+```bash
+wget 'https://downloads.sourceforge.net/project/squirrel/squirrel3/squirrel%203.0.7%20stable/squirrel_3_0_7_stable.tar.gz'
+
+tar xfz squirrel_3_0_7_stable.tar.gz
+
+make -C SQUIRREL3
+
+export PATH=$PATH:$(pwd)/SQUIRREL3/bin
+```
+
+then run the program
+
+```bash
+sq hello.nut
+```
+

Squirrel/hello.nut

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+print("Hello World!\n");