Initial commit of spire-extras project
Initial commit of spire-extras project

See issue #374

@non, @InTheNow does this look reasonable?

tixxit/spire,JackSullivan/spire,guersam/spire,codeaudit/spire,non/spire,rklaehn/spire,non/spire,guersam/spire,siddhartha-gadgil/spire,codeaudit/spire,rklaehn/spire,kevinmeredith/spire,tixxit/spire,JackSullivan/spire,adampingel/spire,kevinmeredith/spire,siddhartha-gadgil/spire,adampingel/spire