Add a test that loads all BP code, showing true coverage.

.coveragerc

@@ -7,5 +7,5 @@ include = bibliopixel/*/*.py, bibliopixel/*.py
 
 [report]
 
-fail_under = 50
+fail_under = 35
 skip_covered = True

requirements.txt

@@ -1,3 +0,0 @@
-Pillow>=2.4.0
-pyserial>=2.7
-spidev==2.0

test/all_test.py

@@ -0,0 +1,46 @@
+import unittest
+
+import bibliopixel
+
+from bibliopixel import (
+    animation,
+    colors,
+    data_maker,
+    font,
+    gamepad,
+    gamma,
+    image,
+    layout,
+    led,
+    log,
+    matrix,
+    return_codes,
+    # serial_gamepad,
+    timedata,
+    util,
+)
+
+from bibliopixel.drivers import (
+    APA102,
+    LPD8806,
+    # SimPixel,
+    WS2801,
+    driver_base,
+    dummy_driver,
+    hue,
+    image_sequence,
+    network,
+    network_receiver,
+    network_udp,
+    serial_driver,
+    spi_driver_base,
+    # timedata_visualizer,
+    visualizer,
+    visualizerUI,
+)
+
+
+class ImportAllTest(unittest.TestCase):
+    def test_all(self):
+        # We pass just by successfully importing everything above.
+        pass

test_requirements.txt

@@ -1,4 +1,6 @@
+pyserial>=2.7.0
 coverage
 flake8
+phue
 pytest
 Pillow>=2.4.0