[phobos] [D-Programming-Language/phobos] bfa6cd: Improve Nullable documentation

[GitHub via phobos]

  Branch: refs/heads/master
  Home:   https://github.com/D-Programming-Language/phobos
  Commit: bfa6cd72ae83a977f272bf3520f3ef5da99eb7cf
      https://github.com/D-Programming-Language/phobos/commit/bfa6cd72ae83a977f272bf3520f3ef5da99eb7cf
  Author: MetaLang <jared771 at gmail.com>
  Date:   2015-04-10 (Fri, 10 Apr 2015)

  Changed paths:
    M std/typecons.d

  Log Message:
  -----------
  Improve Nullable documentation


  Commit: ddfd111ab55cc60f1a35c4ce8ff49341000ad7ed
      https://github.com/D-Programming-Language/phobos/commit/ddfd111ab55cc60f1a35c4ce8ff49341000ad7ed
  Author: JakobOvrum <JakobOvrum at users.noreply.github.com>
  Date:   2015-04-18 (Sat, 18 Apr 2015)

  Changed paths:
    M std/typecons.d

  Log Message:
  -----------
  Merge pull request #3114 from MetaLang/nullable-doc-fixes

Improve Nullable documentation


Compare: https://github.com/D-Programming-Language/phobos/compare/c59966eb1783...ddfd111ab55c