Use currentEditor vs. currentSourceEditor. 

Fixed typo in _currentOneBasedLineNubmer. 
Previously did not compile:

The following build commands failed:
	CompileC build/CedarShortcuts.build/Release/CedarShortcuts.build/Objects-normal/x86_64/CDRSRunFocused.o CedarShortcuts/CDRSRunFocused.m normal x86_64 objective-c com.apple.compilers.llvm.clang.1_0.compiler
	CompileC build/CedarShortcuts.build/Release/CedarShortcuts.build/Objects-normal/x86_64/CDRSEditMenu.o CedarShortcuts/CDRSEditMenu.m normal x86_64 objective-c com.apple.compilers.llvm.clang.1_0.compiler
(2 failures)
rake aborted!