Create .gitattributes (#733)

You seem to have issues with inconsistent line endings. 

Please read more about .gitattributes here: https://help.github.com/articles/dealing-with-line-endings/

The above file is a simple example.

.gitattributes

@@ -0,0 +1,17 @@
+# Visual Studio
+*.sln text eol=crlf
+*.vcxproj text eol=crlf
+*.props text eol=crlf
+
+# Qt
+*.pro text eol=crlf
+*.pri text eol=crlf
+
+# Source code
+*.cpp text eol=crlf
+*.h text eol=crlf
+*.rc text eol=crlf
+*.asm text eol=lf
+
+# Scripts
+*.bat text eol=crlf