Update max and min that those method will just ignore the null value in the input values, not just return null at once but continue comparing the other values.
Add getTavAndAmp method
Add JAVA doc and revise the code
Add scale for the final result of getTavTamp
Test case for getTavAndTamp method
Add handling for pure weather data set and whole experiment data set
Add handling for the incomplete year data
Add the method that remove null element from array, so that average or any other calculation could still get a valid value while there are null elements
minor revise
Add ICN_DIST method
revise javadoc
Merge pull request #14 from MengZhang/develop

Develop pull request from meng