he seguido todos los pasos de instalacion Versiones para Güindous( sorry ya me cambio luego a otro de linux) ruby 2.1.6p336 Rails 4.3. Pero:
new rails Primer
An error occurred while installing json (1.8.2), and Bundler cannot continue.
Make sure that gem install json -v '1.8.2' succeeds before bundling.
You have not told us what the error was, there should be some more detail. If it was a problem building then probably you have not installed all the required tools. You need to tell us which operating system you are using (Ubuntu, Mac os or whatever).
Colin
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