Update README.md

@@ -22,4 +22,20 @@ threads is set to the number of logical cpus, the server will always use all
 cpus 100% but still perform as normal (since all other processes have higher 
 priority). If this is run on a virtual machine, the hypervisor will think the
 server always needs all available cpu resources given to the machine, minimizing
-the risk of letting the hypervisor think that cpu resources can be shared.
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+the risk of letting the hypervisor think that cpu resources can be shared.
+
+## Compile
+
+Using GCC and pthreads:
+```
+gcc -pthread piloop.c -o piloop
+```
+
+## Binary in Repository
+
+The pre-compiled piloop file in the repository is compiled for
+```
+piloop: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, 
+interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.32, 
+BuildID[sha1]=5312cb7d4bc2fab8851badf5ef36ddd91ce2136a, not stripped
+```
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