Fix obsolete warnings (as of yasnippet 0.8):
Fix obsolete warnings (as of yasnippet 0.8):

- use `yas-snippet-dirs` instead of obsolete `yas/snippet-dirs`
- use `yas-global-mode` instead of obsolete `yas/global-mode`

pramukta/emacs.d,pramukta/emacs.d,oldfartdeveloper/emacsd,pramukta/emacs.d,blowery/dot-emacs,gihankarunarathne/Nunoboko