update benchmark results

Author: hmottestad

src/test/java/com/apicatalog/jsonld/benchmark/README.md

@@ -1,13 +1,28 @@
-
-
 ## Original results
 ```
 Benchmark                     Mode  Cnt     Score     Error  Units
 LoadingBenchmark.toRdfApiGet  avgt    5  5859.114 ± 522.500  ms/op
 ```
 
+#### OOMBenchmark.toRdfApiGet
+```
+Iteration   1: 7466.977 ms/op
+Iteration   2: 6891.456 ms/op
+Iteration   3: Terminating due to java.lang.OutOfMemoryError: Java heap space
+```
+
+
 ## Current results
 ```
 Benchmark                     Mode  Cnt     Score     Error  Units
 LoadingBenchmark.toRdfApiGet  avgt    5  3363.833 ± 448.450  ms/op
 ```
+
+#### OOMBenchmark.toRdfApiGet
+```
+Iteration   1: 3271.161 ms/op
+Iteration   2: 1867.856 ms/op
+Iteration   3: 1798.996 ms/op
+Iteration   4: 1805.217 ms/op
+Iteration   5: Terminating due to java.lang.OutOfMemoryError: Java heap space
+```