Simplify note-c subtree and add a script for updating it. (#122)

Prior to this commit, we were including everything from note-c. Now, we've
removed all the unneeded subdirectories, most notably test/, which caused all
sorts of problems because the Arduino build system has no way of ignoring
folders. In the future, when note-c needs to be bumped, use
scripts/upate_note_c.sh.

Author: haydenroche5

library.properties

@@ -1,5 +1,5 @@
 name=Blues Wireless Notecard
-version=1.5.2
+version=1.5.3
 author=Blues
 maintainer=Blues <[email protected]>
 sentence=An easy to use Notecard Library for Arduino.

scripts/update_note_c.sh

@@ -0,0 +1,49 @@
+#!/bin/bash
+
+#
+# Update the note-c subtree.
+#
+# Usage: ./update_note_c.sh <note-c git ref>
+#
+# The note-c git ref argument is optional. If not specified, the master branch
+# will be used.
+#
+
+# Exit script if any command fails.
+set -e
+
+SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+ROOT_DIR="$SCRIPT_DIR/.."
+
+# Optional argument to specify the note-c ref to check out when creating the
+# subtree.
+if [ $# -eq 0 ]; then
+    REF="master"
+else
+    REF="$1"
+fi
+
+# Move to the root of note-arduino.
+pushd $ROOT_DIR
+# Remove the existing note-c directory.
+rm -rf src/note-c
+# Commit the changes so that the next git subtree command doesn't complain about
+# changes in the working tree.
+git commit -am 'remove note-c before re-add'
+# Check out the note-c subtree using the given ref or master if not specified.
+git subtree add --prefix=src/note-c --squash https://github.com/blues/note-c.git $REF
+
+# Remove all the unneeded directories from the subtree.
+NOTE_C_DIR="$ROOT_DIR/src/note-c"
+NOTE_C_UNNEEDED_DIRS=(
+    "$NOTE_C_DIR/assets"
+    "$NOTE_C_DIR/docs"
+    "$NOTE_C_DIR/scripts"
+    "$NOTE_C_DIR/test"
+)
+for DIR in "${NOTE_C_UNNEEDED_DIRS[@]}"; do
+    rm -rf "$DIR"
+done
+
+# Return to original directory.
+popd