Update latest version and examples to 0.5.0
Update latest version and examples to 0.5.0

Also added direct link to the latest release page for easy downloading.

manolama/YCSB,manolama/YCSB,cricket007/YCSB,ChristianNavolskyi/YCSB,madhurihn/YCSB_ToyDB,ChristianNavolskyi/YCSB,zyguan/ycsb,jaemyoun/YCSB,cricket007/YCSB,cricket007/YCSB,leschekhomann/YCSB,leschekhomann/YCSB,leschekhomann/YCSB,manolama/YCSB,zyguan/ycsb,zyguan/ycsb,zyguan/ycsb,brianfrankcooper/YCSB,brianfrankcooper/YCSB,leschekhomann/YCSB,cricket007/YCSB,madhurihn/YCSB_ToyDB,ChristianNavolskyi/YCSB,madhurihn/YCSB_ToyDB,madhurihn/YCSB_ToyDB,jaemyoun/YCSB,ChristianNavolskyi/YCSB,brianfrankcooper/YCSB,jaemyoun/YCSB,jaemyoun/YCSB,brianfrankcooper/YCSB,manolama/YCSB