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

@@ -7,10 +7,22 @@ The board is designed for 1 oz copper on all layers.  1.6 mm thickness should
 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

@@ -1,4 +1,4 @@
-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]
@@ -28,7 +28,7 @@ NetIExt=net
 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