Made matching AppleWebKit more relaxed about how WebKit is capatilized. This is to deal with the mysterious LG phone which seemingly uses 'AppleWebkit' (lower-case k) in its useragent string.
Use Regex instead of two string comparisons.
Removed unnecessary non-capturing group in testing for WebKit.
Merge pull request #77 from typekit/bs-relax-webkit-detection

Made matching AppleWebKit more relaxed about how WebKit is capitalized.