Add KorAP query screenshot

Change-Id: Iafb7a647b0f38e21328b3810920a7880d1a0d2cd
diff --git a/R/korap_query.png b/R/korap_query.png
new file mode 100644
index 0000000..86f245d
--- /dev/null
+++ b/R/korap_query.png
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