fix up .gitattributes

Author: johnDance

.gitattributes

@@ -0,0 +1,15 @@
+# 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.
+*.js text
+*.css text
+*.ts text
+*.twb text
+*.trex text
+
+# Denote all files that are binary and should not be modified.
+*.png binary
+*.jpg binary
+*.twbx binary