lab_3: Merge pull request #18 from terminalstderr/readme

Please see readme.md for a report/discussion. This work was performed by Ryan Leonard, Rui Tu, and Frank Arana.

At this release, we are able to run a MIPS implementation of fibbonacci using our IP.

Lab 2

This work was performed by Rui Tu, Ryan Leonard, and Frank Arana.
This release contains a version of our MIPS CPU (mipscpu.v, mipscpu_tb.v).

Following instructions supported and tested:

• addi
• add
• sw
• lw

This includes the following modules:

• control
• alu control
• decoder
• rfwrite mux
• rf
• sign ext
• alusrc mux
• alu
• data memory
• wb mux