Add status=suspended badge

Author: anitagraser

README.md

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 # QGIS Processing Trajectools
 
+[![Project Status: Suspended – Initial development has started, but there has not yet been a stable, usable release; work has been stopped for the time being but the author(s) intend on resuming work.](https://www.repostatus.org/badges/latest/suspended.svg)](https://www.repostatus.org/#suspended)
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 The Trajectools plugin adds trajectory tools to the QGIS Processing toolbox. 
 
 ![Trajectools screenshot](https://raw.githubusercontent.com/anitagraser/qgis-processing-trajectory/master/screenshots/trajectools.PNG)