[WIP] [feature] StructureBracesFixer

Braces for structure blocks, fix #98

- [x] add missing braces
- [x] correct single-level intend
- [ ] correct multi-level intend
- [ ] fix #168 
- [ ] make Travis pass
you can't just write:
`<?php while(true)`
it must be at least `<?php while(true);` or `<?php while(true){}`