Implement uppercase target

Show target label by uppercase letter, but you can type it as lowercase
Make sure g:EasyMotion_keys doesn't include lowercase

autoload/EasyMotion.vim

@@ -745,6 +745,9 @@ endfunction "}}}
 				call s:Prompt('Target key')
 
 				let char = s:GetChar()
+				if g:EasyMotion_use_upper == 1 && match(g:EasyMotion_keys, '\l') == -1
+					let char = toupper(char)
+				endif
 			" }}}
 		finally
 			" Restore original lines

plugin/EasyMotion.vim

@@ -28,6 +28,7 @@ set cpo&vim
 		\ , 'smartcase'             : 0
 		\ , 'skipfoldedline'        : 1
 		\ , 'use_migemo'            : 0
+		\ , 'use_upper'             : 0
 		\
 		\ , 'hl_group_target'         : 'EasyMotionTarget'
 		\ , 'hl2_first_group_target'  : 'EasyMotionTarget2First'