[skip travis] Minor README and help updates to be more clear.

README.md

@@ -47,7 +47,7 @@ Currently, I'm unable to really dev or test on MacOS, so I'm not sure how well t
 
 - `q`, `Ctrl-C` to quit.
 
-- `f` to freeze updating. Press `f` again to unfreeze. Note updating will still continue in the background.
+- `f` to freeze the screen from updating with new data. Press `f` again to unfreeze. Note that monitoring will still continue in the background.
 
 - `Up/k`, `Down/j`, `Left/h`, `Right/l` to navigate between panels.
 
@@ -55,7 +55,7 @@ Currently, I'm unable to really dev or test on MacOS, so I'm not sure how well t
 
 - `Esc` to close a dialog window.
 
-- `?` to get a help screen explaining the controls.
+- `?` to get a help screen explaining the controls. Note all controls except `Esc` to close the dialog will be disabled while this is open.
 
 #### Processes Panel
 

src/canvas.rs

@@ -66,7 +66,7 @@ pub fn draw_data<B : backend::Backend>(terminal : &mut Terminal<B>, app_state :
 				Text::raw("Shift+Up and Shift+Down scrolls through the list.\n"),
 				Text::raw("Esc to close a dialog window (help or dd confirmation).\n"),
 				Text::raw("? to get this help screen.\n"),
-				Text::raw("\nProcess Panel Keybinds\n"),
+				Text::raw("\n Process Panel Keybinds\n"),
 				Text::raw("dd to kill the selected process.\n"),
 				Text::raw("c to sort by CPU usage.\n"),
 				Text::raw("m to sort by memory usage.\n"),
@@ -75,7 +75,7 @@ pub fn draw_data<B : backend::Backend>(terminal : &mut Terminal<B>, app_state :
 			];
 
 			Paragraph::new(text.iter())
-				.block(Block::default().title("Help").borders(Borders::ALL))
+				.block(Block::default().title("Help (Press Esc to close)").borders(Borders::ALL))
 				.style(Style::default().fg(Color::Gray))
 				.alignment(Alignment::Left)
 				.wrap(true)