gitview: Add some useful keybindings.

index b836047..3b6bdce 100755
@@ -450,6 +450,9 @@ class GitView:
 		self.accel_group = gtk.AccelGroup()
 		self.window.add_accel_group(self.accel_group)
 		self.accel_group.connect_group(0xffc2, 0, gtk.ACCEL_LOCKED, self.refresh);
+		self.accel_group.connect_group(0xffc1, 0, gtk.ACCEL_LOCKED, self.maximize);
+		self.accel_group.connect_group(0xffc8, 0, gtk.ACCEL_LOCKED, self.fullscreen);
+		self.accel_group.connect_group(0xffc9, 0, gtk.ACCEL_LOCKED, self.unfullscreen);
 
 		self.window.add(self.construct())
 

@@ -461,6 +464,18 @@ class GitView:
 		self.window.show()
 		return True
 
+	def maximize(self, widget, event=None, *arguments, **keywords):
+		self.window.maximize()
+		return True
+
+	def fullscreen(self, widget, event=None, *arguments, **keywords):
+		self.window.fullscreen()
+		return True
+
+	def unfullscreen(self, widget, event=None, *arguments, **keywords):
+		self.window.unfullscreen()
+		return True
+
 	def get_bt_sha1(self):
 		""" Update the bt_sha1 dictionary with the
 		respective sha1 details """

index e3bc4f4..6924df2 100644
@@ -26,8 +26,14 @@ OPTIONS
 	<args>
 		All the valid option for git-rev-list(1)
 	Key Bindings:
+	F4:
+		To maximize the window
 	F5:
 		To reread references.
+	F11:
+		Full screen
+	F12:
+		Leave full screen
 
 EXAMPLES
 ------