[glibmm] Added a format file for clang-format.

[Murray Cumming <murrayc src gnome org>]

commit e3e3a5da0a3bc670499bc6c60c558a2c659d21af
Author: Murray Cumming <murrayc murrayc com>
Date:   Fri Feb 26 09:05:54 2016 +0100

    Added a format file for clang-format.
    
    For automatic reformatting of the source code.

 .clang-format |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)
---
diff --git a/.clang-format b/.clang-format
new file mode 100644
index 0000000..8d3b34c
--- /dev/null
+++ b/.clang-format
@@ -0,0 +1,12 @@
+BasedOnStyle: Mozilla
+Standard: Cpp11
+AlignAfterOpenBracket: false
+AlignEscapedNewlinesLeft: true
+AlwaysBreakAfterDefinitionReturnType: None
+BreakBeforeBraces: Allman
+BreakConstructorInitializersBeforeComma: false
+ColumnLimit: 100
+ConstructorInitializerAllOnOneLineOrOnePerLine: true
+ConstructorInitializerIndentWidth: 0
+IndentCaseLabels: false
+