add writeup readme

writeup-readme

+# Readme for Milo and Davis' final 5504 project
+
+This project is a simulation based project comparing the performance of vector instructions in 
+AArch64 and x86_64.
+
+We include the writeup as a pdf in the top directory.
+In the writeup is a link to the git repo, but we also include the code in the directory.
+
+To re-create the results there are multiple steps.
+First you must build all the test programs.
+Go into the image-bench directory and run build.sh.
+Then go into the livermore directory and run build_l.sh
+This will build all the test files.
+
+To run the simulation for the livermore loops run the sim.sh script in the livermore
+directory.
+This will place the results in the out directrory.
+The copy.sh script then moves them all to the res directory, which will contain
+the same data as the livermore-results directory.
+
+For the image benchmarks, you will have to run each individually by using the rs.sh
+script in the main directory.
+Invoke the script with the base name of the test and it will run all the simulation
+for x86, arm and vector and non-vector.
+
+The git repository for the project can be found here:
+    https://git.cs.vt.edu/miloc/5504-research