minimal readme and enable cache analysis

Signed-off-by: Ava Hahn <a.hahn@f5.com>

README.md

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+# Profiling Setup
+This is a script that uses a docker-compose environment with custom NGINX
+configuration to profile NGINX for CPU and Memory costly calls.
+
+### Dependencies
+The following must be installed and configured on your system.
+- Valgrind
+- Callgrind
+- Docker
+- Docker Compose
+- Rsync
+- Go
+
+### Use
+Call run.sh like so:
+```
+$ run.sh ./path/to/nginx/source/directory
+```