Update README.md

README.md

@@ -24,3 +24,9 @@ line (remember to restart your terminal window when adding to the path.)
 Once you have `ugligfyjs` command available, running `make` from your
 fork's root directory will rebuild both `nv.d3.js` and `nv.d3.min.js`.
 
+Without UglifyJS, you won't get the minified version when running make.
+
+**We ask that you DO NOT minify pull requests... 
+If you need to minify please build pull request in separate branch, and
+merge and minify in yout master.
+