Merge pull request #173 from gskapka/fix-db-proxy-sample

fix(db-proxy-sample): adds `bin` dir & .keep file...
diff --git a/samplecode/db-proxy/db-proxy/bin/.keep b/samplecode/db-proxy/db-proxy/bin/.keep
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/samplecode/db-proxy/db-proxy/bin/.keep