Create README.md

tehfedaykin · web-flow · commit 9acdd2df394b · 2019-05-20T15:47:23.000+02:00
diff --git a/README.md b/README.md
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+Adds a @diff tag for use in bit-docs.
+
+@diff takes two file paths and an optional "only" flag. 
+
+The files will be diffed and return the codeblock with the second file's contents with a list of the new lines. 
+To be used in demonstarting changes between files as a tutorial progresses
