add test/keyword_demo.cpp

test/keyword_demo.cpp

@@ -0,0 +1,14 @@
+#include "../src/KeywordExtractor.hpp"
+using namespace CppJieba;
+
+int main(int argc, char ** argv)
+{
+    KeywordExtractor extractor("../dict/jieba.dict.utf8", "../dict/hmm_model.utf8", "../dict/idf.utf8");
+    string s("我是蓝翔技工拖拉机学院手扶拖拉机专业的。不用多久，我就会升职加薪，当上总经理，出任CEO，迎娶白富美，走上人生巅峰。");
+    string res;
+    vector<pair<string, double> > wordweights;
+    size_t topN = 5;
+    extractor.extract(s, wordweights, topN);
+    print(res);
+    return EXIT_SUCCESS;
+}