[gtk+] HighContrast: Update parse-sass.sh; remove Gemfile

[Daniel Boles <dboles src gnome org>]

commit dcdd31e6f3edf29ceec5e81bbee5342c506a7cdb
Author: Daniel Boles <dboles src gmail com>
Date:   Wed May 31 18:45:24 2017 +0100

    HighContrast: Update parse-sass.sh; remove Gemfile
    
    Make parse-sass.sh use sassc instead of the old Ruby method.

 gtk/theme/HighContrast/Gemfile       |    2 --
 gtk/theme/HighContrast/parse-sass.sh |   14 ++++++++++++--
 2 files changed, 12 insertions(+), 4 deletions(-)
---
diff --git a/gtk/theme/HighContrast/parse-sass.sh b/gtk/theme/HighContrast/parse-sass.sh
index e385f83..274c1dc 100755
--- a/gtk/theme/HighContrast/parse-sass.sh
+++ b/gtk/theme/HighContrast/parse-sass.sh
@@ -1,3 +1,13 @@
-#!/bin/sh
+#! /bin/bash
 
-bundle exec sass --update --sourcemap=none .
+if [ ! "$(which sassc 2> /dev/null)" ]; then
+   echo sassc needs to be installed to generate the css.
+   exit 1
+fi
+
+SASSC_OPT="-M -t compact"
+
+echo Generating the css...
+
+sassc $SASSC_OPT gtk-contained.scss gtk-contained.css
+sassc $SASSC_OPT gtk-contained-inverse.scss gtk-contained-inverse.css