Started Linux Virtual File System
VPS common file model stated.
Figures 18 & 19 added.
Finishing Inode
Merge pull request #14 from mladenw/Mladens_Edit

Mladens edit
Continue with VFS
Finishing VFS
Path_Lookup mechanism starting
Path_Lookup mechanism ... studing
Merge pull request #15 from mladenw/Mladens_Edit

Mladens edit
Merge pull request #16 from mladenw/ForEditing

Merge pull request #13 from mladenw/master
Merge pull request #17 from mladenw/master

Sync with master