round runtimes to 4 decimal places
Merge pull request #34 from johnbfair/master

Small changes to 7 and 12, added placeholder for 15
Sped up with a progressive reducer
PHP 003 - complete
Merge pull request #35 from kalisjoshua/php-003

PHP 003 - complete
PHP 007 - 0.5 seconds now
PHP 013 - 0.0002 econds
PHP 018 - 0.0008 seconds
Merge pull request #36 from joetech/php-018

PHP 018 - 0.0008 seconds
euler15
Merge branch 'fsharp' of github.com:tyane/euler into fsharp
euler16
Merge branch 'master' into fsharp

Conflicts:
	fsharp/euler015.fs
typo
Merge pull request #37 from tyane/fsharp

euler 15