added nicefloats as dependency

deps/nicefloats/README.markdown

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+nicefloats
+==========
+
+an erlang implementation of nice decimal representations of floating point numbers, based on "Printing FLoating-Point Numbers Quickly and Accurately" by Burger & Dybvig
+
+
+### usage ###
+
+`nicefloats:format(Float)`        
+
+
+### installation ###
+
+`make` or `./rebar compile` to build nicefloats
+
+`make test` or `./rebar eunit` to run tests
+
+
+### notes ###
+
+this project was originally a part of [jsx][1], and remnants of that projects history may linger. try to ignore it.
+
+
+
+
+
+
+
+[1]: http://www.github.com/talentdeficit/jsx/