[DOC] Release notes for patch 3.26.2.
[REFACTOR PATHS] correcting relative paths in /lib

The gateway executable would only start from the root directory of the project.
These patches change the relative pathing in /lib/processes so that the executable can be run from any directory.
Merge pull request #282 from AdamCmiel/master

[REFACTOR PATHS] correcting relative paths in /lib
Merge pull request #283 from ripple/release-3.26.2-rc1

[FIX] Enable bin/gateway to work from any current directory.