Updated README.md

Author: sea5kg

README.md

@@ -23,21 +23,32 @@ Example main func:
 #include <wsjcpp_sql_builder.h>
 
 int main(int argc, const char* argv[]) {
-    WsjcppSqlBuilderInsert sql("TABLE_NAME");
-    sql.add("COL1", "val1"); // will be escaped
-    sql.add("COL2", 1);
-    // sql.add("COL3", 1.1);
-    if (!sql.isValid()) {
-        std::cerr << "Something wrong with query: " << sql.getErrorMessage() << std::endl;
-        return -1;
-    }
-    std::cout << sql.getTextQuery() << std::endl;
-    return 0;
+  WsjcppSqlBuilder2 builder;
+  builder.selectFrom("table1")
+  .colum("col1")
+  .colum("col2", "c3")
+  .colum("col3")
+  .colum("col4")
+  .where()
+    .equal("col1", "1")
+    .or_()
+    .notEqual("col2", "2")
+    .or_()
+    .subCondition()
+      .equal("c3", "4")
+      // .and_() // be default must be added and
+      .equal("col2", "5")
+    .finishSubCondition()
+    .or_()
+    .lessThen("col4", 111)
+    .endWhere() // need only for groupBy havingBy and etc
+  ;
+  std::cout << builder.sql() << std::endl;
 }
 ```
 
 Example output:
 ```
 $ ./wsjcpp-sql-builder
-INSERT INTO TABLE_NAME(COL1, COL2) VALUES ('val1', 1);
+SELECT col1, col2 AS c3, col3, col4 FROM table1 WHERE col1 = '1' OR col2 <> '2' OR (c3 = '4' AND col2 = '5') OR col4 < 111
 ```