Clean up .gitignore and README.md.

Change-Id: I8006c12fd076baf8fedf0775842aade5d05f0d0d
Reviewed-on: https://asterix-gerrit.ics.uci.edu/791
Reviewed-by: Till Westmann <tillw@apache.org>
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
diff --git a/.gitignore b/.gitignore
index 8530a4b..6453783 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,18 +12,18 @@
 asterix_logs
 build
 bin
-asterix-app/src/test/resources/externallib/
-asterix-app/rttest/
-asterix-app/mdtest/
-asterix-app/opttest/
-asterix-app/parserts/
-asterix-app/library/
-asterix-app/opt_parserts/
-asterix-app/runtime_parserts/
-asterix-app/data/csv/beer.csv
-asterix-installer/ittest/
-asterix-installer/repliationtest/
-asterix-installer/src/test/resources/clusterts/asterix-installer-0.8.9-SNAPSHOT-binary-assembly/
+asterixdb/asterix-app/src/test/resources/externallib/
+asterixdb/asterix-app/rttest/
+asterixdb/asterix-app/mdtest/
+asterixdb/asterix-app/opttest/
+asterixdb/asterix-app/parserts/
+asterixdb/asterix-app/library/
+asterixdb/asterix-app/opt_parserts/
+asterixdb/asterix-app/runtime_parserts/
+asterixdb/asterix-app/data/csv/beer.csv
+asterixdb/asterix-installer/ittest/
+asterixdb/asterix-installer/repliationtest/
+asterixdb/asterix-installer/src/test/resources/clusterts/asterix-installer-*-SNAPSHOT-binary-assembly/
 build
 asterix_logs
 bin/