INSTALLATION.md in trackler-2.0.3.7

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+The simplest way to install Purescript is via Node.js and NPM.
+
+If you don't already have Node.js installed on your computer, you can download
+it from the [Node.js website](https://nodejs.org/). Once you have Node.js up
+and running, enter this command into the terminal to install the Purescript
+compiler, the Pulp build tool and the Bower package manager.
+
+    npm install --global purescript pulp bower
+
+More information can be found in [the Purescript repository][ps-repo]
+
+[ps-repo]: (https://github.com/purescript/purescript/blob/master/INSTALL.md).