Merge pull request #2 from catherinev/pair-kimpossibleg,monicadev

we created Task class and added attr_reder attributes for status, descri...
added test for created at
Merge branch 'master' into pair-rickytux,catherinev
Merge our two branches with added test on our end and code for todo.rb from other
Merge pull request #3 from catherinev/pair-rickytux,catherinev

looks awesome team you guys
add created_at attribute that defaults to datetime now and make attr_reader and require date