feat(pipelines) Add a simple Jenkinsfile
feat(pipelines) Add a simple Jenkinsfile

Add a simple `Jenkinsfile` to the code base to try Jenkins pipelines. The file, at the moment, only has a build step which executes the `build.sh` shell script.

Issue #338

rafidka/hadithhouse,hadithhouse/hadithhouse,hadithhouse/hadithhouse,hadithhouse/hadithhouse,hadithhouse/hadithhouse,rafidka/hadithhouse,hadithhouse/hadithhouse,rafidka/hadithhouse,rafidka/hadithhouse,rafidka/hadithhouse,rafidka/hadithhouse,hadithhouse/hadithhouse