Fix build script

.travis.yml

@@ -13,6 +13,13 @@ python:
 #  - "3.7-dev" # 3.7 development branch
 #  - "nightly" # currently points to 3.7-dev
 
+matrix:
+  include:
+    - python: "2.7"
+      env: PVERSION=2
+    - python: "3.6"
+      env: PVERSION=3
+
 install: false
 
 branches:

build.sh

@@ -1,4 +1,5 @@
 #!/bin/sh
+if [[$PVERSION=2]]; then
 python -m py_compile cps.py
 python -m py_compile cps/book_formats.py
 python -m py_compile cps/db.py
@@ -8,4 +9,18 @@ python -m py_compile cps/helper.py
 python -m py_compile cps/ub.py
 python -m py_compile cps/uploader.py
 python -m py_compile cps/web.py
-python -m py_compile cps.py    
+python -m py_compile cps.py 
+fi
+f [[$PVERSION=3]]; then
+python3.6 -m py_compile cps.py
+python3.6 -m py_compile cps/book_formats.py
+python3.6 -m py_compile cps/db.py
+python3.6 -m py_compile cps/epub.py
+python3.6 -m py_compile cps/fb2.py
+python3.6 -m py_compile cps/helper.py
+python3.6 -m py_compile cps/ub.py
+python3.6 -m py_compile cps/uploader.py
+python3.6 -m py_compile cps/web.py
+python3.6 -m py_compile cps.py 
+fi
+