Update README

Apparently MountainBerryFields is out of date,
I faked it -.^
Add instance_exec_b core extension
Bump to 0.0.6
instance_exec_b requires bindable_block so that you can require it directly
Add instance_exec_b to the README
Class of bindable objects is optional, defaults to BasicObject

Which allows the block to be bound to any object
instance_exec_b scopes to the instance's singleton_class
Is a subclass of Proc

Allows it to retian bindability even if being passed through a method's block slot
Ensure it behaves like a proc before binding
rename private method, increase randomness to make even less likely to have name collision
Slowly getting Proc methods to work. Fuck curry.
Looks like rest of the methods other than hash and binding are implemented
Pull ArgAligner into its own file
Show new style where you do not have to pass a class
Argument matching is proc-style or lambda-style based on what original block was
Add notes about instance_exec_b
Bump to version 0.0.7