Merge pull request #16 from benjojo/master

Add a travis.yml
Test against multiple node versions.
Added build status image.
Add missing smemicolons
Merge branch 'master' of github.com:Xotic750/bignumber.js
Merge pull request #19 from Xotic750/missingSemicolon

semicolons
Merge branch 'HEAD' of git@github.com:Xotic750/bignumber.js.git into unescapedRegExpChars
Merge branch 'master' of https://github.com/MikeMcl/bignumber.js.git into unescapedRegExpChars