Adjust definition of DOSP as per recent discussion

README.md

 Research on *delayed open source publication* (DOSP): the practice of
-publishing a software release under a proprietary license, then later
-publishing that release's source code under an open source license.
+publishing a software release under a proprietary license initially,
+then later (usually in a planned fashion) publishing that release's
+source code under an open source license.
 
 While delayed open source publication been somewhat rare, there are
 some examples of it across the history of open source -- in fact, some