Added a gitattribute file to let git deal with line ending issues

.gitattributes

@@ -0,0 +1,21 @@
+# Set default behaviour, in case users don't have core.autocrlf set.
+* text=auto
+
+# Explicitly declare text files we want to always be normalized and converted 
+# to native line endings on checkout.
+*.php text
+*.sql text
+*.htm text
+*.html text
+*.js text
+*.css text
+*.lang text
+*.txt text
+*.md text
+
+# Denote all files that are truly binary and should not be modified.
+*.ico binary
+*.png binary
+*.jpg binary
+*.odt binary
+*.odf binary