Added ConstantDouble. However, left out implementation of parsing bytes
to double
Renamed the packages out of boredom
fixed and tested AccessFlag. It seems to work correctly.
_checked .gitIgnore. I am not sure why git seems to include .class files
although .gitIgnore supposes to filter those out. 
_ Quick summary: so far, I have parsed all the structures in the
constant pool. The constant pool will serve as a lookup table. 
_ Next step: Now I can define the classes that represent the .class file
as required in part 1 of the project (Class, Interface, Fields...) I
will start by creating instance of Class object which will be composed
of other types:( Method, Field, ...). I will follow the similar approach
i have been following, which is parsing the .class file according to the
class file documentation. 
- Estimate completion of phase I: end of February
_ renamed packages
_ implement this_class
_implemented interfaces. It is weird that aaa.class has 1 interface
which index 2. However index 2 is Constant_Field_info not
Constant_class_info
Everything looks fine but i cant be sure there is no bug. 
After modifying aaa.java by removing the int field, interface_count is
0.