add .gitattributes

.gitattributes

@@ -0,0 +1,20 @@
+# Set the default behavior, in case people don't have core.autocrlf set.
+* text=auto
+
+# Explicitly declare text files you want to always be normalized and converted
+# to native line endings on checkout.
+*.c text
+*.h text
+*.txt text
+
+# Declare files that will always have CRLF line endings on checkout.
+*.sln text eol=crlf
+*.msi text eol=crlf
+*.vbs text eol=crlf
+*.vcxproj text eol=crlf
+*.vcxproj.filters text eol=crlf
+
+# Denote all files that are truly binary and should not be modified.
+*.png binary
+*.gif binary
+*.dll binary