Add requireBlocksOnNewline rule

Add requireBlocksOnNewline, which enforces if (x) {y();} to be written
with newlines after { and before }. E.g.:
if (x) {
y();
}
(First github commit ever, hope it's right...)
Move checker.configure(...) line to beforeeach
Merge branch 'master' of https://github.com/mdevils/node-jscs
Merge pull request #221 from Famlam/master

Add requireBlocksOnNewline rule