I have made a start

I have done some work on opening a socket and waiting for a connection.
This can be read line by line and I have started a request struct that
it will accept.

Also started on some docs. Not much is yet working. I am going to start
learning µnit for unit tests:

https://nemequ.github.io/munit/

docs/plugins.md

@@ -0,0 +1,28 @@
+# Plugins
+
+**Note:** This is not implemented yet - it is mearly my plan.
+
+The tool should be able to load plugins. These should be stand alone scripts /
+executables that YAIP can call using `system()` or similar.
+
+I will use a hook / filter type system. There will be different things that
+plugins can do. The order in which plugins run will be dictated in the config
+file or via an API if already running. The API still needs to be thought out.
+
+## Intercept Plugins
+
+Plugins will be able to intercept requests / responses. This will be blocking.
+I haven't decided yet if these plugins will run on stdin or a temporary file.
+
+I would prefer stdin / stdout although I think that would make it difficult for
+a plugin to launch vim and have it be interactive. I'll have to do some trial
+and error.
+
+## Analysis Plugins
+
+These plugins will hopefully be able to run asynchronously without intercepting
+requests / responses. The idea for this is that the plugins could check for
+misconfigured headers or sql statements or whatever. These won't be able to
+change what the server / browser receives.
+
+