Add documentation on API usage; hide unnecessary API exports

README.md

@@ -10,10 +10,26 @@ A fast one-pass in-place HTML minifier written in Rust with advanced whitespace
 
 ## Usage
 
+### CLI
+
 ```bash
 hyperbuild --src /path/to/src.html --out /path/to/output.min.html
 ```
 
+### API
+
+```rust
+use hyperbuild::hyperbuild;
+
+fn main() {
+    let mut code = b"<p>Hello world!</p>"; 
+    match hyperbuild(&mut code) {
+        Ok(minified_len) => {}
+        Err(error_type, error_at_char_no) => {}
+    };
+}
+```
+
 ## Minification
 
 ### Whitespace

fuzz/src/main.rs

@@ -1,5 +1,5 @@
 use afl::fuzz;
-use hyperbuild::hyperbuild;
+use hyperbuild::{hyperbuild, ErrorType};
 
 fn main() {
     fuzz!(|data: &[u8]| {

src/lib.rs

@@ -1,9 +1,9 @@
-use crate::err::ErrorType;
+pub use crate::err::ErrorType as ErrorType;
 use crate::proc::Processor;
 use crate::unit::content::process_content;
 
-pub mod err;
+mod err;
-pub mod pattern;
+mod pattern;
 #[macro_use]
 mod proc;
 mod spec;

src/main.rs

@@ -3,8 +3,7 @@ use std::io::{Read, stderr, Write};
 
 use structopt::StructOpt;
 
-use hyperbuild::err::ErrorType;
+use hyperbuild::{hyperbuild, ErrorType};
-use hyperbuild::hyperbuild;
 
 #[derive(StructOpt)]
 struct Cli {