Update README.md

Author: shysolocup

README.md

@@ -15,13 +15,42 @@ this package is currently in early access and is far from finished ⚠️
 
 <br>
 
+<table>
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+<tr><td>
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+### Installations
+
+</td></tr>
+<tr><td>
+
+<table><tr>
+<td>
+
+stable release versions are on [npm](https://npmjs.com/package/unityscript)
+
+</td><td>
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+experimental versions are on [github](https://github.com/paishee/unityscript)
+
+</td></tr><tr><td>
+
 ```console
 npm install unityscript
 ```
+
+</td><td>
+
 ```console
-npm install paishee/unityscript
+npm install paishee/unityscript      
 ```
 
+</td>
+</table>
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+</tr></table>
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 <br>
 
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