pip-micropython: Require command verb, but restrict to "install" only.

pfalcon · pfalcon · commit 9f043da5c348 · 2014-04-07T02:53:41.000+03:00
So, pip-micropython can/should be run as normal pip:

    pip-micropython install micropython-unittest
diff --git a/tools/pip-micropython b/tools/pip-micropython
@@ -6,6 +6,12 @@
 # ports (if PIP_MICROPY_DEST environment var is set).
 #
 
+if [ "$1" != "install" ]; then
+    echo "Only install command is supported currently"
+    exit 1
+fi
+shift
+
 if [ -n "$PIP_MICROPY_DEST" ]; then
     dest="$PIP_MICROPY_DEST"
     echo "Destination snapshot directory: $dest"
