Merge pull request git#153 from git/update-number-of-students

SoC-2016-Ideas: tell that we accept at most 2 students

Author: moy

SoC-2016-Ideas.md

@@ -94,7 +94,7 @@ discussions.)
 ## Note about the number of slots
 
 In 2016, the Git organization has very limited mentoring capacity.
-We will probably be able to accept 2 students only this year.
+These days we usually accept between 0 and 2 students per year.
 
 ## Summer of code main project ideas