Added script to updat wrappers.

updatewrappers.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+
+export JAVA_HOME="$JAVA8_HOME"
+export PATH="$(cygpath "$JAVA_HOME")/bin:$PATH"
+
+declare -a dirs=("${PWD##*/}" "samples/java" "samples/kotlin")
+pwd=$PWD
+
+updateWrappers() {
+    if [ -d gradle ]; then
+        gradle -q --console=plain wrapper
+        echo -e "    $(./gradlew --version | grep Gradle)"
+    fi
+    if [ -d kobalt ]; then
+        ./kobaltw --update --log 0
+        echo -e "    Kobalt $(cut -d "=" -f 2 kobalt/wrapper/kobalt-wrapper.properties)"
+    fi
+}
+
+color=$(tput setaf 6)
+normal=$(tput sgr0)
+
+for d in "${dirs[@]}"; do
+    if [ -d "$d" ]; then
+        cd "$d" || exit 1
+    fi
+    echo -e "${color}${d}${normal}"
+    updateWrappers
+    cd "$pwd"
+done