Merge pull request #1 from mattcooksey1/master

added one (1) comment.
Update Main.java
Read instructions from file
Added stages and buffers. Implemented Cpu.execute() and Cpu.init(), refactored into packages
Merge pull request #2 from wilson11011/master

Update Main.java
(removed .idea and .iml file)
FetchDecodeBuffer.java: changed readIncrementedPc to writeIncrementedPc and vice-versa

FetchStage.java: Implemented call() function