Java: run text fixture from cli

Java/README.md

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+# Gilded Rose starting position in Java
+
+## Run the Text Fixture from Command-Line
+
+```
+./gradlew -q text
+```
+
+### Specify Number of Days
+
+For e.g. 10 days:
+
+```
+./gradlew -q text --args 10
+```