first commit for chapter 11
	new file:   ch11/README
	new file:   ch11/ch11.pro
	new file:   ch11/main.cpp
added node which is copied from ch10
	modified:   ch11.pro
	modified:   main.cpp
	new file:   node.hpp
refactored the node class for this chapter
	modified:   node.hpp
implemented direct address table, not tested yet.
	new file:   ch11/table_da.hpp
debugged
	modified:   ch11/table_da.hpp
updated
	modified:   ch11/README
added hash table
	modified:   ch11/ch11.pro
	new file:   ch11/hash_table.hpp
added hash table, not finished yet.
	modified:   ch11/ch11.pro
	new file:   ch11/hash_table.hpp
Merge branch 'ch11' of https://github.com/Mooophy/CLRS into ch11
	modified:   ch11/hash_table.hpp
	modified:   ch11/hash_table.hpp

		working on this, added insert print and search.
working on delete, not finished yet.
	modified:   ch11/hash_table.hpp
implemented hash table and tested
 On branch ch11
	modified:   ch11/hash_table.hpp
Update README