Add pre Jekyll build step generating the static schema pages

The generate_schemas script fetches the XSD and XSLT files from the tag of
the ome-model specified in the top-level configuration file, generates the
landing pages and publication layout and move them under Schemas.

.travis.yml

@@ -5,6 +5,9 @@ sudo: required
 services:
 - docker
 
+before_script:
+  - ./generate_schemas.sh
+
 script:
   - docker run -it --rm -v $PWD:/srv/jekyll -eJEKYLL_UID=$UID jekyll/builder:pages jekyll build --config _config.yml,_prod.yml
   - docker run -it  --rm -v $(pwd)/_site:/site -it jekyll/builder:pages /usr/gem/bin/htmlproofer /site --disable-external

generate_schemas.sh

@@ -0,0 +1,9 @@
+#! /bin/sh
+# Generate static schema pages from the ome-model specifications
+
+
+version=$(awk '/omemodel/{getline; print $0}' _config.yml | sed "s/  version: //")
+git clone git://github.com/ome/ome-model -b v$version
+(cd ome-model/specification && sh publish)
+mv ome-model/specification/target/published Schemas
+rm -rf ome-model