Some general updates and housekeeping

[boshek]

rLakeAnalyzer 1.11.0

• Added a NEWS.md file to track changes to the package.
• revamp README with more detail
• convert all documentation to roxygen2 (#44)
• Add top level documentation file (#22)
• Add split and merge vignette

[jordansread]

Looks like some params were missed. I think these will show up if running check

[lawinslow]

@boshek fixes look great. If you're done pushing updates, I'm happy to merge!

[boshek]

@lawinslow yep go ahead merge.