README: upper case initial letters

README.md

@@ -53,58 +53,58 @@ is **not** possible to define new key bindings.
 
 * <kbd>shift</kbd>+<kbd>page up</kbd>/<kbd>page down</kbd>
 
-  scroll up/down in history
+  Scroll up/down in history
 
 * <kbd>ctrl</kbd>+<kbd>shift</kbd>+<kbd>c</kbd>
 
-  copy selected text to the _clipboard_
+  Copy selected text to the _clipboard_
 
 * <kbd>ctrl</kbd>+<kbd>shift</kbd>+<kbd>v</kbd>
 
-  paste from _clipboard_
+  Paste from _clipboard_
 
 * <kbd>ctrl</kbd>+<kbd>shift</kbd>+<kbd>r</kbd>
 
-  start a scrollback search
+  Start a scrollback search
 
 While doing a scrollback search, the following shortcuts are
 available:
 
 * <kbd>ctrl</kbd>+<kbd>r</kbd>
 
-  search for next match
+  Search for next match
 
 * <kbd>escape</kbd>
 
-  cancel the search
+  Cancel the search
 
 * <kbd>ctrl</kbd>+<kbd>g</kbd>
 
-  cancel the search (same as `esc`)
+  Cancel the search (same as `esc`)
 
 * <kbd>return</kbd>
 
-  finish the search and put the current match to the primary selection
+  Finish the search and put the current match to the primary selection
 
 ### Mouse
 
 * <kbd>left</kbd> - **single-click**
 
-  drag to select; when released, the selected text is copied to the
+  Drag to select; when released, the selected text is copied to the
   _primary_ selection. Note that this feature is normally disabled
   whenever the client has enabled mouse tracking, but can be forced by
   holding `shift`.
 
 * <kbd>left</kbd> - **double-click**
 
-  selects the _word_ (separated by spaces, period, comma, parenthesis
+  Selects the _word_ (separated by spaces, period, comma, parenthesis
   etc) under the pointer. Hold `ctrl` to select everything under the
   pointer up to, and until, the next space characters.
 
 * <kbd>left</kbd> - **triple-click**
 
-  selects the entire row
+  Selects the entire row
 
 * <kbd>middle</kbd>
 
-  paste from _primary_ selection
+  Paste from _primary_ selection