Add presentation of the project

presentation.md

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+---
+type: slide
+---
+
+# QuickPlay
+## A simple app to quickly use remote players
+
+---
+
+# Features
+
+Easy to learn
+Central management
+(Theoretically) extensible / modular
+Usable on Android 4.4+ (Tested on Marshmallow)
+(Android only)
+
+---
+
+# Architecture
+
+```graphviz
+digraph "Arch" {
+layout=fdp
+RP -> Player [style="dotted", dir="both"];
+RP[label="Remote player"]
+XML -> AppConfig -> PlayerConfig -> {Player Playables HTTP};
+UI -> LayoutStrategies;
+Person -> UI -> Playables -> Metadata
+Metadata -> LayoutStrategies
+HTTP[label="HTTP + INI"]
+Person, RP, UI, XML, HTTP [shape=box]
+}
+```
+
+---
+
+# Issues
+
+Understanding Android ecosystem is hard
+  - unintuitive naming
+  - complex hierarchy of support libraries
+  - I didn't find comphrehensive overview
+  - many APIs are replaced
+ 
+Quite a lot of boilerplate code (esp. UI)
+
+Visual Studio not refreshing Resource files.
+
+No sensible MPD client library.
+
+---
+
+# Lessons learned
+
+- Basic Android architecture knowledge
+- Network and asynchronous coding
+- Library patching
+