Added autotools build system.

autogen.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+# Run this to generate all the initial makefiles, etc.
+
+srcdir=`dirname $0`
+test -z "$srcdir" && srcdir=.
+
+PKG_NAME="gnome-shell-extension-sensors"
+
+touch ChangeLog
+
+test -f $srcdir/configure.ac || {
+    echo -n "**Error**: Directory "\`$srcdir\'" does not look like the"
+    echo " top-level gnome-shell-extensions directory"
+    exit 1
+}
+
+which gnome-autogen.sh || {
+    echo "You need to install gnome-common from GNOME Git (or from"
+    echo "your OS vendor's package manager)."
+    exit 1
+}
+. gnome-autogen.sh