Added example

example/references.bib

@@ -0,0 +1,23 @@
+@inproceedings{zaharia2012resilient,
+	title={Resilient distributed datasets: A Fault-Tolerant abstraction for In-Memory cluster computing},
+	author={Zaharia, Matei and Chowdhury, Mosharaf and Das, Tathagata and Dave, Ankur and Ma, Justin and McCauly, Murphy and Franklin, Michael J and Shenker, Scott and Stoica, Ion},
+	booktitle={9th USENIX Symposium on Networked Systems Design and Implementation (NSDI 12)},
+	year={2012},
+	keywords={moodle}
+}
+
+@inproceedings{zaharia2010spark,
+	title={Spark: Cluster computing with working sets},
+	author={Zaharia, Matei and Chowdhury, Mosharaf and Franklin, Michael J and Shenker, Scott and Stoica, Ion},
+	booktitle={2nd USENIX Workshop on Hot Topics in Cloud Computing (HotCloud 10)},
+	year={2010},
+	keywords={moodle}
+}
+
+@book{chambers2018spark,
+	title={Spark: The definitive guide: Big data processing made simple},
+	author={Chambers, Bill and Zaharia, Matei},
+	year={2018},
+	publisher={O'Reilly Media},
+	keywords={moodle}
+}