Install-ROOT.md

+# Ubuntu
+If you do __not__ need to install Go4 later or PyROOT, simply run
+
+```sudo apt-get install root-system```
+
+This installs a precompiled 5.34/34 ROOT version that is sufficient for most situations.
+
+Otherwise you need to compile everything yourself, as described [here](https://root.cern.ch/building-root).
+
+# OSX
+There are different options
+1. Use the precompiled binaries from ROOT's [website](https://root.cern.ch/downloading-root)
+2. Install via [homebrew](https://alexpearce.me/2016/02/root-on-os-x-el-capitan/). The installation of AUSAlib is based on this package manager.
+3. __(Untested)__ Install via MacPort: `sudo port install root`
+
+    You can get a list of possible configurations with the command ```port info root```. To install with PyROOT bindings for Python 2.7 simply call
+   `
+   sudo port install root +python27
+   `
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