Strike "either ownership or" from README on background law

Fixes #147

Author: mlinksva

README.md

@@ -12,7 +12,7 @@ PDF, ODT, and DOCX copies of BEIPA are [available for download](https://github.c
 
 ### Why are employee IP agreements deemed necessary by employers?
 
-In the United States, without an express agreement employers usually own [works subject to copyright](https://www.copyright.gov/circs/circ09.pdf) and have either [ownership or a "shop right" to use inventions](http://scholars.law.unlv.edu/cgi/viewcontent.cgi?article=1251&context=nlj#page=2). With an express agreement, employers can obtain lower risk, more certainty, and more control over more IP in more situations – so it's easy to understand that robust IP agreements with employees (and contractors) are necessary. But it's possible for IP agreements to go too far...
+In the United States, without an express agreement employers usually own [works subject to copyright](https://www.copyright.gov/circs/circ09.pdf) and have a ["shop right" to use inventions](http://scholars.law.unlv.edu/cgi/viewcontent.cgi?article=1251&context=nlj#page=2). With an express agreement, employers can obtain lower risk, more certainty, and more control over more IP in more situations – so it's easy to understand that robust IP agreements with employees (and contractors) are necessary. But it's possible for IP agreements to go too far...
 
 ### How does BEIPA differ from other employee IP agreements?