Fixed do_build.sh, .travis.yml trying to run 'make test'

.travis.yml

@@ -4,8 +4,8 @@ dist: trusty
 language: python
 python:
     - "2.7"
-    - "3.3"
-    - "3.4"
+      #    - "3.3"
+      #    - "3.4"
 install:
     - pip install deepdiff
 addons:

do_build.sh

@@ -5,10 +5,11 @@ cd build
 cmake ../
 make
 # make install
-
+set -x
 git clone https://github.com/merbanan/rtl_433_tests.git
 cd rtl_433_tests
 export PATH=../build/src:$PATH
+test -f ../build/src/rtl_433
 
 # virtualenv --system-site-packages .venv
 # source .venv/bin/activate