Update problem.txt

I made it a little harder to miss the need for a 'for loop'.
Update problem.txt

I made it harder to miss the need for a for-loop.
fixed line lengths
Update problem.txt re: arguments

Making it clear that you do not need to add in arguments when running your program in the test environment.
Update problem.txt re: verify

I added a bit more information about 'learnyounode verify'.
Merge pull request #20 from ralphtheninja/master

off by one, empty file is not one line
clarify 'newlines' problems
@0.2.10
Merge pull request #18 from thehack/master

I added more baby steps to problem.txt
more intro-exercise working tweakage
added @julianduque, @ralphtheninja and @thehack
@0.2.11
clarify `net` & `http` modules
fix delay in juggling-async exercise
@0.2.11
rename `filter` to `filterStr`
Fixed typo, changed word "Line" to "Like"
Merge pull request #22 from brynnb/patch-1

Fixed typo, changed word "Line" to "Like"
Missing Paren

Missing paren closing the first pipe
Merge pull request #23 from jeffkile/patch-1

Missing bracket