Add ca-certficates package so that wget can pull https url's.

Change url for xapian bindings o use the https url. The http url
rediects (301) to https.

Author: rouilj

.travis.yml

@@ -12,10 +12,12 @@ addons:
       # Required to install pyme
       - libgpgme11-dev
       - swig
+      # allow wget to pull https url's
+      - ca-certificates
 
 before_install:
   - cd /tmp
-  - wget -q http://oligarchy.co.uk/xapian/1.2.8/xapian-bindings-1.2.8.tar.gz
+  - wget -q https://oligarchy.co.uk/xapian/1.2.8/xapian-bindings-1.2.8.tar.gz
   - tar -zxvf xapian-bindings-1.2.8.tar.gz
   - cd xapian-bindings-1.2.8/
   - ./configure --prefix=$VIRTUAL_ENV --with-python && make && make install