Added any all none to Bitset
Updated all() any() none() functions to const and removed flag variables
Made changes to BitSet.cpp and added few more testcases to BitSet_test.cpp
Fixed compilation errors
Added new lines for better code readability
Added assert functions to the Bitset Test
Removed extra lines
Merge pull request #8 from shyampatro/master

Added any() all() none() to Bitset