Merge pull request #3 from viig99/proxying

[Issue-2] Bug fix for https://github.com/a85/PostmanInterceptor/issues/2...
Added headings - https://github.com/a85/PostmanInterceptor/issues/6
Changing the switch theme to android, with a lighter shade of grey. The on looks blue, the off looks grey, https://github.com/a85/PostmanInterceptor/issues/6