Add upheaval updater, and add dmidecode to check dependencies in the installer

.update/Upheaval.sh

@@ -0,0 +1,14 @@
+run_update() {
+    local installPath="${HOME}/.local/games"
+    local gameName="upheaval-linux-console.zip"
+for i in ~/Downloads ~/Desktop ; do
+        find $i -type f -name "$gameName" -exec mv -v {} "${cache}/" \;
+    done
+    # If the file is still not available abort.
+    if [[ ! -f "${cache}/$gameName" ]]; then
+        dialog --backtitle "Linux Game Manager" --msgbox "Couldn't find $gameName. Please download the file and try again." -1 -1
+        exit 1
+    fi
+mkdir -p "${installPath}/upheaval"
+unzip -od "${installPath}/upheaval" "${cache}/upheaval-linux-console.zip"
+}