Remove comment, remove sleep commands, download Apache RAT
diff --git a/scripts/verify-rc.sh b/scripts/verify-rc.sh
index b7b53f5..b5dc131 100755
--- a/scripts/verify-rc.sh
+++ b/scripts/verify-rc.sh
@@ -1,8 +1,5 @@
 set -e
 
-#VERSION=0.2.0
-#RC=1
-
 if [ -z "$VERSION" ] || [ -z "$RC" ]
 then
   echo "First set the VERSION and RC environment variables."
@@ -11,42 +8,40 @@
 
 gpg --verify apache-annotator-*.tar.gz.asc
 
-sleep 5
-
 sha256sum --check apache-annotator-*.tar.gz.sha256
 sha512sum --check apache-annotator-*.tar.gz.sha512
 
-sleep 5
-
 tar xzf apache-annotator-$VERSION-rc.$RC-incubating.tar.gz
 cd apache-annotator-$VERSION-incubating
 
 git remote show origin
 
-sleep 5
-
 git fetch --unshallow origin tag v$VERSION-rc.$RC
 
 git describe
 
-sleep 5
-
 git status --ignored
 
-sleep 5
-
-# Expects Apache RAT 0.13 jar to be present in home directory
-# wget https://dlcdn.apache.org/creadur/apache-rat-0.13/apache-rat-0.13-bin.zip
-# unzip apache-rat-0.13-bin.zip
-java -jar ~/apache-rat-0.13.jar -E .ratignore -d .
-
-sleep 5
+# We need Apache RAT.
+RAT_VERSION="0.13"
+RAT_JAR_FOLDER="$HOME/.apache-rat-used-for-verifying-annotator"
+RAT_JAR_FILE_PATH="$RAT_JAR_FOLDER/apache-rat-${RAT_VERSION}/apache-rat-${RAT_VERSION}.jar"
+if [ ! -f "$RAT_JAR_FILE_PATH" ]
+then
+  read -p "Did not find Apache RAT at $RAT_JAR_FILE_PATH. Download it? [y/N] " response
+  if [[ $response =~ (Y|y|YES|Yes|yes) ]]
+  then
+    wget -c -P "$RAT_JAR_FOLDER" "https://dlcdn.apache.org/creadur/apache-rat-${RAT_VERSION}/apache-rat-${RAT_VERSION}-bin.zip"
+    unzip -d "$RAT_JAR_FOLDER" "$RAT_JAR_FOLDER/apache-rat-${RAT_VERSION}-bin.zip"
+  else
+    exit 0
+  fi
+fi
+java -jar "$RAT_JAR_FILE_PATH" -E .ratignore -d .
 
 make
 yarn build
 make check
 
-sleep 5
-
 yarn clean
 git status --ignored