README: Add kvm parameter to runqemu call

* without kvm enabled LunaSysMgr segfaults in libQtDeclarative.so.4.8.3
  as reported in:
  http://www.openwebosproject.org/forums/general-discussion/webos-qemu-login-segment-fault
* correct typo

Open-webOS-DCO-1.0-Signed-off-by: Martin Jansa <martin.jansa@palm.com>