moving PythonToVimStr to before _catch_exception
Revert "moving PythonToVimStr to before _catch_exception"

This reverts commit 320809c21147698a6892f1c859efe9703d2a1ae8.
moving if to end of file
adding self to authors
Merge pull request #183 from fuhrysteve/master

NameError: global name 'PythonToVimStr' is not defined
force jedi.vim's fileencoding to utf-8
add Sheng Yun in AUTHORS.txt
Merge pull request #186 from ShengYun/bugfix-set-fileencoding

force jedi.vim's fileencoding to utf-8