Import and Export methods are added to SVM class. Necessary exceptions and
null check conditions are added. Works well in my tests. Also, the line 89
in SVM.cs file is deleted because now we have import method and it is not
needed anymore.
Contructors are updated with the importing model function.
rename libsvm.net.tests to libsvm.net.examples
rename examples files
add unit-tests project and remove combined dataset (too larges)
add unit tests for classification svm (C_SVC)
improve documentation
publish v2.1.0 on nuget
upload nugget package v2.1.4 and mv datasets directory
refactoring and tests improvement