add .gitattributes to repo

.gitattributes

@@ -0,0 +1,14 @@
+# Set the default behavior, in case people don't have core.autocrlf set.
+* text=auto
+
+# Declare files that will always have LF Unix-style line endings on checkout.
+*.c text eol=lf
+*.h text eol=lf
+*.in text eol=lf
+
+# Denote all files that are truly binary and should not be modified.
+*.png binary
+*.jpg binary
+*.zip binary
+*.cfg binary
+*.nv binary