Added _KI_LIB_GIT library path

Set the _KI_LIB_GIT path to point to a local copy of the kicad-library
Git repository.  Then this project will pick up the Git libraries
instead of the system ones.

README.md

 be fine.  Just keep in mind that it isn't possible to assemble the board with a
 soldering iron anymore!
 
-The PCB is made with [KiCad](http://kicad-pcb.org/), so you'll need that if you
-want to make any changes.  Several PCB fabricators accept KiCad PCB files
-directly now, but if you intend to order from one that does not, you'll need
-KiCad to plot the Gerbers.
+The PCB is made with [KiCad][], so you'll need that if you want to make any
+changes.  Several PCB fabricators accept KiCad PCB files directly now, but if
+you intend to order from one that does not, you'll need KiCad to plot the
+Gerbers.
+
+KiCad 4 supports loading footprint libraries from Git repositories, but its
+support for doing the same with symbol libraries is lacking.  To address this,
+I added the variable `_KI_LIB_GIT`.  Set this path in the main KiCad window
+(Preferences > Configure Paths) to point to a local copy of the
+[kicad-library][] repository to ensure that you're using the latest schematic
+libraries.
+
+[KiCad]: http://kicad-pcb.org/
+[kicad-library]: https://github.com/KiCad/kicad-library/
+
+## License
 
 PD Buddy Sink is Copyright (C) 2017 Clayton G. Hobbs, and made available under
 the CERN Open Hardware Licence v1.2.  See LICENSE for more information.

pd-buddy-sink.pro

-update=Wed 01 Feb 2017 05:36:05 PM EST
+update=Sat 06 May 2017 11:23:54 AM EDT
 version=1
 last_client=kicad
 [pcbnew]
 version=1
 [eeschema]
 version=1
-LibDir=/usr/share/kicad/library
+LibDir=$(_KI_LIB_GIT)/library;/usr/share/kicad/library
 [eeschema/libraries]
 LibName1=power
 LibName2=device