OSR-29
    OSR-31
    OSR-33
    Added support for yy-mm-dd format (OSR-31)
    Modified read.table to take into account optional
    parameters (as.is, colClasses, staringsAsFactors) (OSR-29)
    Modified parse_regex to use lists with named elements, rather
    than parallel vectors. (OSR-33)

    Added support for optional tz (timezone) argument to
    as.POSIXct.character (OSR-39)

    Also, for compliance with other implements of as.POSIXct.*,
    removed the format argument. Another method with this argument
    was created, called string.to.POSIXct.
Add R/zzz.R for start-up message
Created some new tests, and made sure tests ran correctly.
Merge branch 'dev-0.2.1' of https://github.com/DarylMcCullough/date.reader into v0.2.1
OSR-29: testing
Merge branch 'dev' of https://github.com/decisionpatterns/date.reader into osr-29

Conflicts:
	R/as.POSIXct.R
	R/parse.date.R
	R/parse_regex.R
	R/type.convert.R
	R/which.format.R
	man/as.POSIXct.character.Rd
	man/parse.date.Rd
	tests/testthat/test-as.POSIX.R