Update readme for SQLx.

README.md

@@ -7,9 +7,7 @@ Currently under heavy development.
 ## Build Instructions
 
 These are very basic build instructions. They assume you already have
-cargo set up and installed. Building the application requires **Rust
-Nightly!** See [rustup documentation][rustup] for more, particularly
-the part about using [Rust Nightly][nightly].
+cargo set up and installed.
 
 ### Install Dependencies
 
@@ -23,18 +21,19 @@ Install dependencies. The exact method depends on your OS.
 
 ### Initial Setup
 
-Follow these instructions from the root of the repository. Set up database:
+Follow these instructions from the root of the repository.
+
+Set up database:
 
 ```
-cargo install diesel_cli --no-default-features --features sqlite
-diesel setup
-diesel migration run
+cargo install --version=0.2.0 sqlx-cli
+cargo run --bin tenebrous-migrate
 ```
 
 ### Run Application
 
 If you are using `rustup`, then it should automatically switch to the
-nightly version of Rust in this repository. This is because of the
+stable version of Rust in this repository. This is because of the
 `rust-toolchain` file.
 
 Command line "instructions" to build and run the application:
@@ -43,9 +42,27 @@ Command line "instructions" to build and run the application:
 cargo run
 ```
 
-The sqlite database is currently always created in the same directory
-that `cargo run` was invoked from, so make sure you invoke it from the
-same place every time.
+The sqlite database is created in the directory `cargo run` was
+invoked from by default. You can also pass a path to a different
+location as a single argument to the program.
+
+## Development
+
+Development instructions.
+
+To set up a local database, or run migrations, run:
+
+```
+cargo run --bin tenebrous-migrate
+```
+
+### Database Queries and Migrations
+
+When adding/updating a compile-checked query or a migration, you need
+to update the SQLx data JSON file:
+
+```
+cargo sqlx prepare -- --bin tenebrous
+```
 
 [rustup]: https://rust-lang.github.io/rustup/index.html
-[nightly]: https://rust-lang.github.io/rustup/concepts/channels.html#working-with-nightly-rust