new install/uninstall scripts

* new uninstall script
* system install no longer supported
* local install using local virtualenv and symbolic links in
  ~/.local/bin
* --dev switch to allow developper mode with symlinks to git

uninstall

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+srcdir=$(dirname $(readlink -f $0))
+venvdir=~/.local/lib/runon
+bindir=~/.local/bin
+configdir=~/.config/runon
+
+if [ -e $venvdir/bin/runon ]; then
+    echo "remove links from $bindir"
+    find -L $bindir -samefile $bindir/runon -exec rm -v {} \;
+    find -L $bindir -samefile $venvdir/bin/runon -exec rm -v {} \;
+fi
+
+if [ -d $venvdir ]; then
+    echo "remove virtualenv $venvdir"
+    rm -rf $venvdir
+fi
+
+if [ -e $configdir ]; then
+    echo "remove configs"
+    rm -vf $configdir/runon.default.conf
+    rmdir -v $configdir || true
+fi
+
+echo "done."