DOC: Try alt location

Chenge doc build location

Author: bashtage

.travis.yml

@@ -66,7 +66,7 @@ script:
       cd ${BUILD_DIR}/doc
       make html
       cd ${BUILD_DIR}
-      doctr deploy doc
+      doctr deploy doc/build/html
     fi;
   - |
     if [ ${PYTHON} = "3.6" ]; then