Completed all exercises in chapter 2.
Create README.md
Minor updates to exercises from chapter 2.
Added grunt-execute as an NPM dependency.
More exercises from chapter 3
Added find w/ function methods to ch3
Began working on chapter 4 exercises.
Implemented exercise 3 from chapter 3.
Implemented exercise 4 from chapter 3.
wip: Working exercise 2 on p. 36
Will work on recursive countEven function later.
Implemented exercises on p. 39
More stuff from chapter 4
Finally got data type correct for #2 on p. 36
More examples from ch 4
Added isPrime from p. 44 ex. 1
Added cartesian product from p. 44 ex. 2
Functions using any from ch. 4 p. 44
Worked on ch4 exercises from p. 49
Add 'purescript-exercises/' from commit '6c92ce8cc6f7906d3e73d484a222f28072f81e7f'

git-subtree-dir: purescript-exercises
git-subtree-mainline: 772668ca3ff37571d833eed184ebbe34dda4e7bc
git-subtree-split: 6c92ce8cc6f7906d3e73d484a222f28072f81e7f