docs: document cli flags

README.md

@@ -24,7 +24,30 @@ cargo install ttyper
 
 ## usage
 
-For usage instructions, you can run `ttyper --help`.
+For usage instructions, you can run `ttyper --help`:
+
+```
+ttyper 1.0.0-pre.1
+Terminal-based typing test.
+
+USAGE:
+    ttyper [FLAGS] [OPTIONS] [contents]
+
+FLAGS:
+    -d, --debug             
+    -h, --help              Prints help information
+        --list-languages    List installed languages
+    -V, --version           Prints version information
+
+OPTIONS:
+    -c, --config <config>                  Use config file
+    -l, --language <language>              Specify test language
+        --language-file <language-file>    Specify test language in file
+    -w, --words <words>                    Specify word count [default: 50]
+
+ARGS:
+    <contents>
+```
 
 ### examples
 
@@ -33,6 +56,7 @@ For usage instructions, you can run `ttyper --help`.
 | `ttyper`                       |   50 of the 200 most common english words |
 | `ttyper -w 100`                |  100 of the 200 most common English words |
 | `ttyper -w 100 -l english1000` | 100 of the 1000 most common English words |
+| `ttyper --language-file lang`  |      50 random words from the file `lang` |
 | `ttyper text.txt`              |  contents of `text.txt` split at newlines |
 
 ## languages

src/config.rs

@@ -226,6 +226,7 @@ where
     deserializer.deserialize_str(ColorVisitor)
 }
 
+#[cfg(test)]
 mod tests {
     use super::*;
 

src/main.rs

@@ -36,15 +36,19 @@ struct Opt {
     #[structopt(short, long)]
     debug: bool,
 
+    /// Specify word count
     #[structopt(short, long, default_value = "50")]
     words: num::NonZeroUsize,
 
+    /// Use config file
     #[structopt(short, long)]
     config: Option<PathBuf>,
 
+    /// Specify test language in file
     #[structopt(long, parse(from_os_str))]
     language_file: Option<PathBuf>,
 
+    /// Specify test language
     #[structopt(short, long)]
     language: Option<String>,
 

src/ui.rs

@@ -9,7 +9,6 @@ use std::iter;
 use tui::{
     buffer::Buffer,
     layout::{Constraint, Direction, Layout, Rect},
-    style::{Color, Modifier, Style},
     symbols::Marker,
     text::{Span, Spans, Text},
     widgets::{Axis, Block, BorderType, Borders, Chart, Dataset, GraphType, Paragraph, Widget},
@@ -296,10 +295,7 @@ impl ThemedWidget for &results::Results {
             .data(&wpm_sma)];
 
         let wpm_chart = Chart::new(wpm_datasets)
-            .block(
-                Block::default()
-                    .title(vec![Span::styled("Chart", theme.title)])
-            )
+            .block(Block::default().title(vec![Span::styled("Chart", theme.title)]))
             .x_axis(
                 Axis::default()
                     .title(Span::styled("Keypresses", theme.results_chart_x))