Add more docstrings to document the methods

Author: ychin

src/MacVim/MMAppController.m

@@ -1126,6 +1126,7 @@ - (void)refreshAllAppearances
     }
 }
 
+/// Refresh all Vim text views' fonts.
 - (void)refreshAllFonts
 {
     unsigned count = [vimControllers count];
@@ -1135,6 +1136,8 @@ - (void)refreshAllFonts
     }
 }
 
+/// Refresh all resize constraints based on smooth resize configurations
+/// and resize the windows to match the constraints.
 - (void)refreshAllResizeConstraints
 {
     const unsigned count = [vimControllers count];
@@ -1144,6 +1147,8 @@ - (void)refreshAllResizeConstraints
     }
 }
 
+/// Refresh all text views and re-render them, as well as updating their
+/// cmdline alignment properties to make sure they are pinned properly.
 - (void)refreshAllTextViews
 {
     unsigned count = [vimControllers count];

src/MacVim/MMCoreTextView.m

@@ -553,6 +553,7 @@ - (void)setThinStrokes:(BOOL)state
     thinStrokes = state;
 }
 
+/// Update the cmdline row number from Vim's state and cmdline alignment user settings.
 - (void)updateCmdlineRow
 {
     [self setCmdlineRow: [[[self vimController] objectForVimStateKey:@"cmdline_row"] intValue]];