compstatr v0.1.1

• initial CRAN submission
• add Zenodo release badge to README
• update installation instructions on README and on the pkgdown site
• add cran-comments.md
• in response to initial feedback from Matthias Sterrer (CRAN):
  • add cs_example() function for creating a sample year worth of .csv files
  • add executable examples for cs_prep_year(), cs_load_year(), and cs_projectXY
  • clarify DESCRIPTION for package
• in response to additional feedback from Swetlana Herbrandt (CRAN):
  • added a link to the DESCRIPTION file to the SLMPD data source
  • ensured that the examples in example.R and create.R read from and write to a temporary directory
• add a function cs_address() to facilitate concatenation of street addresses prior to geocoding