feat(faq): removed IBM content, cleaned up links, minor copy edits
feat(faq): removed IBM content, cleaned up links, minor copy edits

closes #52

nauerz-ibm/openwhisk.github.io,nauerz-ibm/openwhisk.github.io,nauerz-ibm/openwhisk.github.io,nauerz-ibm/openwhisk.github.io