Fixed some warinings in the serialization package.
Fixed some warnings in the com.effective.serializaition package.
Added demo for "77 For instance control, prefer enum types to
readResolve".
Added close invoking to the output stream of the BogusPeriod's serialize
method.
Merge branch 'master' of https://github.com/haokaibo/AlgorithmHelper.git

Conflicts:
	src/com/effectivejava/serialization/Elvis.java
	src/com/effectivejava/serialization/ElvisStealer.java
	src/com/effectivejava/serialization/Period.java