improve the vignette

Hi all,

First of all, great job on the package ! Works great for me and has helped me deploy some shiny apps that help a lot of people in the company :)
This is a great solution to not have to go through a whole production process.

I had a very simple (maybe dumb) question that I couldn't find an answer for. The question came from user trial and use :

• If someone wants to pin the shiny

The R version for chosen for an electricShine must be the same as the R version being used to build it.
Need to add a warning into the code for this
chasemc/electricShine#255, chasemc/electricShine#272, chasemc/electricShine#300

Colors apply to conditions in the alphabetical order of the conditions. Hence, the addition of user defined color when the conditions are ordered in a different manner (e.g. according to median value) is not intuitive.

Current work-around: select as the ordering: ‘By alphabet/number“ and insert the list of colors. After that the ordering can be changed.