Added Notebook reference in Note
Updated Note.cs to modify the get method of Notebook
Added a method in Engine to get notes according to notebooks
Updated NoteReader and NoteWriter to save the notebook for each Note
Moved the implementation of Notebook to Tags, Fixed Identation issue
Refactored code, removed unused variables
Added method to remove Notebook associated with Note
Merge branch 'Notebook'
Merge branch 'master' of https://github.com/tomboy-notes/tomboy-library
Fixed whitespaces with tabs
Merge pull request #10 from rashoodkhan/master

Added Notebook Support