Allow specifying default lint settings

[jimhester]

There are a few options for this.

• Global Settings
  • Just have a global config file somewhere
  • Contributing to packages with different settings may be annoying
• Package specific settings
  • Put the config in the DESCRIPTION
    • from http://cran.r-project.org/doc/manuals/r-release/R-exts.html#The-DESCRIPTION-file it says There is no restriction on the use of other fields not mentioned here (but using other capitalizations of these field names would cause confusion)
    • downside is this only works if you are developing a package, also I don't know if CRAN will be happy with this
  • Put them in the Rstudio project file
    • Allows use with any Rstudio project, so doesn't have to be a package
    • but you have to use Rstudio.
  • Use our own config file
    • Further pollutes the directory with a new file
    • Have to add it to .RBuildIgnore
    • However this might be easier to link to or contributers to find

[jimhester]

Ended up using our own file .lintr, but the name is configurable.

closed by 2b9d30f