Fix export on linux, and remove eval hack from base_exporter
Changes to be committed:
	modified:   CHANGELOG
	modified:   lib/ruby-processing/exporters/base_exporter.rb
	modified:   lib/ruby-processing/version.rb
	modified:   lib/templates/application/run.erb
Merge pull request #93 from jashkenas/noeval

Fix export on linux, and remove eval hack from base_exporter