fix path problem for artifacts, update description, only build on tags

.travis.yml

@@ -4,6 +4,7 @@ node_js:
 git:
   submodules: true
   depth: false
+if: tag IS blank
 services:
 - docker
 before_install:

PUSH_REQUIREMENTS.md

@@ -38,4 +38,8 @@ v0.2.3:
 
 When pushes are done on other branches, nothing gets deployed anywhere, but the build can still fail if:
 1. There are compilation errors in the firmware build - which is a good way to see if changing something in the code breaks the build.
-1. The changelog is not updated to the next version.
+1. The changelog is not updated to the next version.
+
+## Avoiding the CI Build
+
+If you wish to skip the build on a commit, just add to its commit message `[ci skip]`. Note that in case multiple commits are pushed together, the skip command is effective only if it is present in the commit message of the HEAD commit.

README.md

@@ -1,4 +1,5 @@
-## GiggleBot MicroPython for the BBC Micro:bit
+## GiggleBot MicroPython for the BBC Micro:bit 
+[![Build Status](https://travis-ci.org/RobertLucian/micropython-gigglebot.svg?branch=master)](https://travis-ci.org/RobertLucian/micropython-gigglebot)
 
 This is the source code for MicroPython that's running on the BBC micro:bit + GiggleBot robot.
 

build.sh

@@ -37,8 +37,10 @@ docker container cp gupy-container:/src/tmp/ build/
 # update cache image on docker hub
 docker image push $IMAGE_NAME
 
-pushd build
-tar -cvzf $(cat $TRAVIS_BUILD_DIR/integration/tag)-mpy-modules.tar.gz tmp/*.mpy
-tar -cvzf $(cat $TRAVIS_BUILD_DIR/integration/tag)-py-modules.tar.gz tmp/*.py
+pushd build/tmp
+tar -cvzf $(cat $TRAVIS_BUILD_DIR/integration/tag)-mpy-modules.tar.gz *.mpy
+tar -cvzf $(cat $TRAVIS_BUILD_DIR/integration/tag)-py-modules.tar.gz *.py
+cd ..
+mv tmp/*.tar.gz .
 mv firmware.hex $(cat $TRAVIS_BUILD_DIR/integration/tag)-dexterindustries-gb-firmware.hex
 popd