Add method docs to README
Merge pull request #95 from GeekOnCoffee/patch-1

Add method docs to README
Add missing bots. Closes #99. Also closes #97.
Add some more bots
Fix blank user agent
Use refute.
Don't recognize Android as Safari.
Merge pull request #105 from fnando/android-is-not-safari

Don't recognize Android as Safari.
Detect Chrome from Samsung devices. Closes #107.
Merge pull request #108 from fnando/samsung-chrome-version

Detect Chrome from Samsung devices. Closes #107.
Add Browser#known? method

This method returns true if the browser has successfully been detected i.e.
it has been possible to determine which browser the User-Agent string belongs
to (Chrome, Firefox, etc). If the browser has not been detected then this
method will return false.
Change 's to "s in browser_spec.rb
Ignore iOS when checking for Mac platform. Closes #110.
Detect iOS8.
Bump up version.
Add instructions for tickets.
Detect Windows Phone 8.1. Closes #115.
Add www.statuscake.com to known bots
adding more user agents found frequently in logs

Adding user agents frequently found in our site logs not caught by browser gem:

```
netEstate NE Crawler (+http://www.website-datenbank.de/)
AddThis.com robot tech.support@clearspring.com
RelateIQ Crawler www.relateiq.com
````

Also found baidu spider:
````
Mozilla/5.0 (Linux;u;Android 2.3.7;zh-cn;) AppleWebKit/533.1 (KHTML,like Gecko) Version/4.0 Mobile Safari/533.1 (compatible; +http://www.baidu.com/search/spi_der.html
````

Since it was in the bots file twice with the same value, I changed one value to include just `baidu` instead of `Chinese search engine`.
added Insitesbot