Swot::get_institution_name reads UTF-8 files
* Add magic encoding comment to test_swot.rb, so Ruby knows its UTF-8
* Add assertion for testing a valid email returns a UTF-8 string
* Add Travis CI build status badge to README
Merge pull request #33 from simeonwillbanks/file-read-utf8

Swot::get_institution_name reads UTF-8 files