Merge pull request #178 from haslersn/enhancement/document-execute-pp…

…-diff

Document the difference between `execute` and `++`

README.md

@@ -119,9 +119,10 @@ ps >> [&](int a,int b){ ... };
 
 // after a successfull execution the statment can be executed again, but the bound values are resetted.
 // If you dont need the returned values you can execute it like this
-ps.execute();
+ps++; // Does reset the bound values
 // or like this
-ps++;
+ps.execute(); // Does NOT reset the bound values, but we can reset them manually:
+ps.reset();
 
 // To disable the execution of a statment when it goes out of scope and wasn't used
 ps.used(true); // or false if you want it to execute even if it was used
@@ -132,7 +133,7 @@ auto ps = db << "insert into complex_table_with_lots_of_indices values (?,?,?)";
 int i = 0;
 while( i < 100000 ){
    ps << long_list[i++] << long_list[i++] << long_list[i++];
-   ps++;
+   ps++; // Equal to: ps.execute(); ps.reset();
 }
 ```