title: Building RESTful API using R
body: <p>I am thinking about building a RESTful API using the programming language <strong>R</strong>, mainly to expose my machine learning model to the user in an API format. 
  I know there are some options like export to PMML, PFA and use other languages to take care of the API part. However, I want to stick to the same programming language and was wondering if there is anything like Flask/Django/Springbook framework in R? </p>
  
  <p>I took a look at <a href="https://github.com/yihui/servr" rel="noreferrer">servr</a>/<a href="http://shiny.rstudio.com/" rel="noreferrer">shiny</a> but I really don't think RESTful is what they are designed for. Is there any better solution within <strong>R</strong> that is more easy to use? </p>