[ruby-cvs:73663] kazu:r66559 (trunk): [DOC] Add doc/NEWS-2.6.0 [ci skip]

[kazu at ruby-lang.org]

kazu	2018-12-26 01:09:39 +0900 (Wed, 26 Dec 2018)

  New Revision: 66559

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=66559

  Log:
    [DOC] Add doc/NEWS-2.6.0 [ci skip]
    
    fix previous commit miss

  Added files:
    trunk/doc/NEWS-2.6.0