Update README.rst

I guess the year of Release date should be 2014.

Author: hellovic

README.rst

@@ -25,12 +25,12 @@ Prerequisites::
 =============  =================  =================  ===========================================================
 ES version     Plugin             Release date       Command
 -------------  -----------------  -----------------  -----------------------------------------------------------
-0.90.9         0.90.9.1           Jan 9, 2013        ./bin/plugin --install knapsack --url http://bit.ly/1e81hwh
-0.90.9         0.90.9.1 (S3)      Jan 9, 2013        ./bin/plugin --install knapsack --url http://bit.ly/K8QwOJ
-0.90.10        0.90.10.1          Jan 14, 2013       ./bin/plugin --install knapsack --url http://bit.ly/1j5rOy2
-0.90.10        0.90.10.1 (S3)     Jan 14, 2013       ./bin/plugin --install knapsack --url http://bit.ly/1d3kYkp
-1.0.0.RC1      1.0.0.RC1.1        Jan 16, 2013       ./bin/plugin --install knapsack --url http://bit.ly/19vmQHu
-1.0.0.RC1      1.0.0.RC1.1 (S3)   Jan 16, 2013       ./bin/plugin --install knapsack --url http://bit.ly/1m82PHw
+0.90.9         0.90.9.1           Jan 9, 2014        ./bin/plugin --install knapsack --url http://bit.ly/1e81hwh
+0.90.9         0.90.9.1 (S3)      Jan 9, 2014        ./bin/plugin --install knapsack --url http://bit.ly/K8QwOJ
+0.90.10        0.90.10.1          Jan 14, 2014       ./bin/plugin --install knapsack --url http://bit.ly/1j5rOy2
+0.90.10        0.90.10.1 (S3)     Jan 14, 2014       ./bin/plugin --install knapsack --url http://bit.ly/1d3kYkp
+1.0.0.RC1      1.0.0.RC1.1        Jan 16, 2014       ./bin/plugin --install knapsack --url http://bit.ly/19vmQHu
+1.0.0.RC1      1.0.0.RC1.1 (S3)   Jan 16, 2014       ./bin/plugin --install knapsack --url http://bit.ly/1m82PHw
 =============  =================  =================  ===========================================================
 
 The S3 version includes Amazon AWS API support, it can optionally transfer archives to S3.