Emacs: Change some key bindings and update README accordingly.

Navigation among notes now uses `M-n`/`M-p` to (same as SLIME.)

Loading now uses `C-c C-L` in order to not interfere with standard
Haskell mode.  Once Scion can do all things that Haskell mode can do,
I'll switch it back to `C-c C-l`.

README.markdown

@@ -98,14 +98,25 @@ the following to your `.emacs`:
 Once you have a running and connected Scion server, you can use the
 commands provided by scion-mode:
 
-  * `M-x scion-open-cabal-project` (`C-c C-o`) configures a .cabal
-    project and loads the meta-data from a .cabal file.  Note that
-    this doesn't type check or load anything.  If you change the
-    .cabal file of a project, call this function to update the session
-    with the new settings.
-
-  * `M-x scion-load-library` (`C-c C-l`) type checks all the files in
-    the library.
+  * `C-c C-o` (`scion-open-cabal-project`) configures a Cabal project
+    and loads the meta-data from a Cabal file.  Note that this
+    does not type check or load anything.  If you change the Cabal
+    file of a project, call this function to update the session with
+    the new settings.
+
+  * `C-c C-L` (`scion-load`) load the current file with Scion.  If
+    the file is within a Cabal project this will prompt to use the
+    settings from one of the components in the package description
+    file.  You can still choose to load only the current file using
+    the default settings.
+
+If loading generates any errors or warnings, a buffer will appear and
+list them all.  Pressing `RET` on a note will jump to its source
+location.  Pressing `q` closes the buffer, and `C-c C-n`
+(`scion-list-compiler-notes`) brings it back.  Use `M-n`
+(`scion-next-note-in-buffer`) and `M-p`
+(`scion-previous-note-in-buffer`) to navigate within the notes of one
+buffer.
 
 There are a few more utilities:
 

emacs/scion.el

@@ -2025,9 +2025,10 @@ installed packages (However, not of the current project.)"
 (define-key scion-mode-map "\C-cim" 'haskell-insert-module-name)
 
 (define-key scion-mode-map "\C-c\C-o" 'scion-open-cabal-project)
-(define-key scion-mode-map "\C-c\C-l" 'scion-load)
-(define-key scion-mode-map "\C-c\C-n" 'scion-next-note-in-buffer)
-(define-key scion-mode-map "\C-c\C-p" 'scion-previous-note-in-buffer)
+(define-key scion-mode-map "\C-c\C-L" 'scion-load)
+(define-key scion-mode-map "\M-n" 'scion-next-note-in-buffer)
+(define-key scion-mode-map "\M-p" 'scion-previous-note-in-buffer)
+(define-key scion-mode-map "\C-c\C-n" 'scion-list-compiler-notes)
 
 (defun haskell-insert-module-header (module-name &optional
 						 author