- add .gitattributes to describe proper line-endings

.gitattributes

@@ -1,2 +1,29 @@
-*		text=false
+*		text=auto
 
+*.h		text
+*.c		text
+*.cc		text
+*.cpp		text
+*.mm		text
+*.lemon		text
+*.y		text
+*.re		text
+*.i		text
+*.asm		text
+*.S		text
+
+*.vcproj	text
+*.sln		text
+*.bat		text
+*.rc		text
+
+*.txt		text
+language.*	text
+
+*.png		binary
+*.imgz		binary
+*.lmp		binary
+*.flac		binary
+*.dat		binary
+*.ico		binary
+wadsrc/*	binary