Update README.adoc
Update README.adoc

#136 which described issues with embedding audio content from BandCamp and SoundCloud. I added the bandcamp example and explained that you can't have mixed protocols.
anthonny/dev.hubpress.io,anthonny/dev.hubpress.io,anthonny/dev.hubpress.io,demo-hubpress/demo-hubpress.github.io,anthonny/dev.hubpress.io,demo-hubpress/demo-hubpress.github.io,TheAshwanik/new,anthonny/dev.hubpress.io,demo-hubpress/demo-hubpress.github.io,TheAshwanik/new,TheAshwanik/new,TheAshwanik/new,demo-hubpress/demo-hubpress.github.io,demo-hubpress/demo-hubpress.github.io