David Smith notes that R Tools for Visual Studio has hit version 0.5:
RTVS also makes it easy to run R code as a SQL Server 2016 stored procedure. (This is a great way to make share the results of R code with other database users while making use of the power of the database for R computations.) The new SQL R Stored Procedure file works with SQL Server R Services to create a stored procedure that embeds R code you create, edit and test within RTVS. This greatly simplifies the process of running R code within SQL Server 2016 as you can see below:
The RTVS team is making good progress. If you passed on RTVS early on, it might be time to take another look.