Update the download link for 0.7.0.
Update the download link for 0.7.0.

nopnop/rivets,QAPInt/rivets,re-clone/rivets,nopnop/rivets,GerHobbelt/rivets,mikeric/rivets,MishaMykhalyuk/rivets,mikeric/rivets,MishaMykhalyuk/rivets,benderTheCrime/tiny-rivets,GerHobbelt/rivets,jccazeaux/rivets,zongkelong/rivets,re-clone/rivets,jccazeaux/rivets,GerHobbelt/rivets,QAPInt/rivets,QAPInt/rivets,jccazeaux/rivets,altmind/rivets,altmind/rivets,nopnop/rivets,zongkelong/rivets,zongkelong/rivets,mikeric/rivets,re-clone/rivets,MishaMykhalyuk/rivets,altmind/rivets