Added range multiplier to Readme
diff --git a/README.md b/README.md
index 051b301..325675a 100644
--- a/README.md
+++ b/README.md
@@ -61,6 +61,13 @@
BENCHMARK(BM_memcpy)->Range(8, 8<<10);
```
+By default the arguments in a range are generated in multiples of eight and the command above selects [ 8, 64, 512, 4k, 8k ]. In the following code the range multiplier is changed to multiples of two.
+
+```c++
+BENCHMARK(BM_memcpy)->RangeMultiplier(2)->Range(8, 8<<10);
+```
+Now the arguments generated are [ 8, 16, 32, 64, 128, 256, 512, 1024, 2k, 4k, 8k ].
+
You might have a benchmark that depends on two inputs. For example, the
following code defines a family of benchmarks for measuring the speed of set
insertion.
