fix timeout bug in rooting script and update docs

tools/install-dev.sh

@@ -0,0 +1,18 @@
+#!/bin/env bash
+
+set -e
+
+mkdir build
+cd build 
+curl -LOs "https://github.com/EFForg/rayhunter/releases/latest/download/release.tar"
+curl -LOs "https://github.com/EFForg/rayhunter/releases/latest/download/release.tar.sha256"
+if ! sha256sum -c --quiet release.tar.sha256; then 
+    echo "Download corrupted! (╯°□°)╯︵ ┻━┻"
+    exit 1
+fi
+
+tar -xf release.tar
+./install-linux.sh
+
+cd ..
+rm -rf build