Solution files should always be CRLF.

.gitattributes

@@ -0,0 +1,13 @@
+# NOTE: this file is for git 1.6.6 (and possibly older)
+# Post-1.7.2 there is eol and text, and crlf is deprecated
+# but we can't depend on an unreleased version...
+
+# This file mainly controls line ending conversion behaviour, if
+# the user has the setting core.autocrlf true.
+
+# The meaning of the attributes is a little odd
+# -crlf means DO NOT convert line endings
+# crlf means CONVERT to lf in the repo & Linux/Mac, crlf on Windows
+
+# sln is always CRLF, even on linux, so don't convert
+*.sln	-crlf