feat(docs): add get started

Signed-off-by: Alex Chi <iskyzh@gmail.com>

mini-lsm-book/src/00-get-started.md

@@ -0,0 +1,27 @@
+# Get Started
+
+The starter code and reference solution is available at [https://github.com/skyzh/mini-lsm](https://github.com/skyzh/mini-lsm).
+
+## Install Rust
+
+See [https://rustup.rs](https://rustup.rs) for more information.
+
+## Clone the repo
+
+```
+git clone https://github.com/skyzh/mini-lsm
+```
+
+## Starter code
+
+```
+cd mini-lsm/mini-lsm-starter
+code .
+```
+
+## Run tests
+
+```
+cargo x copy-test day1
+cargo x scheck
+```

mini-lsm-book/src/SUMMARY.md

@@ -1,13 +1,21 @@
 # LSM in a Week
 
 [Overview](./00-overview.md)
+[Get Started](./00-get-started.md)
 
 ---
 
+# Tutorial
+
 - [Store key-value pairs in little blocks](./01-block.md)
 - [And make them into an SST](./02-sst.md)
 - [Now it's time to merge everything](./03-memtable.md)
 - [The engine is on fire](./04-engine.md)
+
+---
+
+# WIP Chapters
+
 - [Let's do something in the background](./05-compaction.md)
 - [Be careful when the system crashes](./06-recovery.md)
 - [A good bloom filter makes life easier](./07-bloom-filter.md)