Add SVM, posTag to Program.cs

1. Add SVM & posTag architecture.
2. Pull out some used path.
3. If you want use SVM, just mark the "#define KNN_MODE".
4. If you don't want to use POSTAG, just mark the "#define USE_POSTAG".
Create NLPAdapter.cs

Use this to run do POSTAG
Create SVMAdapter.cs

Use this to do SVM
Merge pull request #1 from SangoX/master

Merge SVM & POSTAG from Sango