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Update README.md

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@ -18,14 +18,14 @@ And, yes, it has "time travel debugger" capabilities - you can go backwards
and forwards through epochs - but that's really not the most interesting or powerful
aspect of what `re-frame-trace` delivers.
### It Is All About Trace Data
### It Is About Trace Data
As it runs, `re-frame` logs "trace" as data (not strings).
This data trace provides an x-ray of your app's functioning.
`re-frame-trace` is essentially a consumer, processor and displayer of this x-ray trace data.
### More Data
### It Is About The Data Flow
While re-frame is a functional framework, it is
strongly defined by its "data oriented" design. `re-frame`
@ -150,11 +150,13 @@ If you are using leiningen, modify `project.clj` in the following ways. When puz
## How does it work?
re-frame is instrumented - all important activity generates trace data. `re-frame-trace` consumes this trace data and renders useful visualisations of the `re-frame` process. Currently, re-frame's tracing capabilities are in alpha and are subject to change at any time. We're testing the utility of the the trace by building an app on top.
re-frame is instrumented - all important activity generates trace data.
`re-frame-trace` consumes this trace data and renders useful visualisations of the `re-frame` process. Currently, re-frame's tracing capabilities are in alpha and are subject to change at any time. We're testing the utility of the the trace by building an app on top.
By default, re-frame tracing is "compiled out", so it won't impose a performance cost in production. The trade-off here is that you need to explicitly enable it in development.
The [preloads](https://github.com/clojure/clojurescript/wiki/Compiler-Options#preloads) option (`:preloads [day8.re-frame.trace.preload]`) has to be set in order to automatically monkeypatch Reagent to add appropriate lifecycle hooks. Yes this is gross, and yes we will try and make a PR to reagent to add proper hooks, once we know exactly what we need. The preload namespace also injects a div containing the devtools panel into the DOM.
The [preloads](https://github.com/clojure/clojurescript/wiki/Compiler-Options#preloads) option (`:preloads [day8.re-frame.trace.preload]`) has to be set in order to automatically monkeypatch Reagent to add appropriate lifecycle hooks. Yes this is gross, and yes we will [make a PR to reagent to add proper hooks](https://github.com/Day8/re-frame-trace/issues/115), once we know exactly what we need. The preload namespace also injects a div containing the devtools panel into the DOM.
## Developing/Contributing