[xulrunner] Update description text

[Christopher Aillon]

commit 5c323075d8918f968a7a5c9348d022e38cabd2ed
Author: Christopher Aillon <caillon at redhat.com>
Date:   Wed Feb 2 22:00:50 2011 -0800

    Update description text
    
    Based on text from https://developer.mozilla.org/En/XULRunner

 xulrunner.spec |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)
---
diff --git a/xulrunner.spec b/xulrunner.spec
index 0368847..c45795e 100644
--- a/xulrunner.spec
+++ b/xulrunner.spec
@@ -104,7 +104,11 @@ Requires:       sqlite >= %{sqlite_build_version}
 Provides:       gecko-libs = %{version}
 
 %description
-XULRunner provides the XUL Runtime environment for Gecko applications.
+XULRunner is a Mozilla runtime package that can be used to bootstrap XUL+XPCOM
+applications that are as rich as Firefox and Thunderbird. It provides mechanisms
+for installing, upgrading, and uninstalling these applications. XULRunner also
+provides libxul, a solution which allows the embedding of Mozilla technologies
+in other projects and products.
 
 %package devel
 Summary: Development files for Gecko
@@ -141,7 +145,8 @@ Requires: libnotify-devel
 Requires: mesa-libGL-devel
 
 %description devel
-Gecko development files.
+This package contains the libraries amd header files that are needed
+for writing XUL+XPCOM applications with Mozilla XULRunner and Gecko.
 
 #---------------------------------------------------------------------