[common] Init repo
[openstack101-02042014] Init openstack101
[openstack101-02042014] Init document structure
[openstack101-02042014] Update headers
[openstack101-02042014] Update tableofcontents
[openstack101-02042014] Add general intro on cloud-computing
[openstack101-02042014] Add openstack overview
[openstack101-02042014] Add technical part
[openstack101-02042014] Add tips and learn part