[gnome-builder] markdown: add default editor settings

[Christian Hergert <chergert src gnome org>]

commit 6aeba04f3c9182cb8cb3d574356b9da191d6d133
Author: Christian Hergert <christian hergert me>
Date:   Fri Oct 16 11:13:22 2015 -0700

    markdown: add default editor settings
    
    4 space tabs and don't trim trailing whitespace.
    Apparently you need to "<br/>  " in markdown.
    We might want to actually put in a special case for this at some point,
    but I also don't like pandering to those on the brink of insanity.

 data/file-settings/defaults.ini |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)
---
diff --git a/data/file-settings/defaults.ini b/data/file-settings/defaults.ini
index fb6663c..61b766d 100644
--- a/data/file-settings/defaults.ini
+++ b/data/file-settings/defaults.ini
@@ -7,7 +7,7 @@
 # "all languages" default value will get that setting overridden. A potential
 # alternative is to layer backends, which is out of scope at the moment.
 [global]
-version = 1
+version = 2
 
 [automake]
 insert-spaces-instead-of-tabs = false
@@ -55,6 +55,12 @@ overwrite-braces = true
 insert-spaces-instead-of-tabs = false
 tab-width = 8
 
+[markdown]
+insert-spaces-instead-of-tabs = true
+tab-width = 4
+# markdown sometimes needs trailing whitespace
+trim-trailing-whitespace = false
+
 [python]
 insert-spaces-instead-of-tabs = true
 tab-width = 4