Test absolute path for RTD.

requirements_rtd.txt

@@ -0,0 +1,16 @@
+CoilMQ>=1.0.1
+Flask>=0.12.2
+HiYaPyCo>=0.4.11
+PyYAML>=3.13
+arrow>=0.10.0
+click-log>=0.2.1
+click>=6.7
+gevent>=1.3.6
+gunicorn>=19.7.1
+pytest-flask
+rdflib==4.2.2
+requests-toolbelt>=0.8.0
+requests>=2.18.4
+sphinx-rtd-theme>=0.2.4
+stomp.py>=4.1.20
+wheel>=0.30.0a0