Merge pull request sqlcipher#24 from developernotes/master

Build Update

Author: n8fr8

Makefile

@@ -23,7 +23,7 @@ build-java:
 	jar -cvf sqlcipher.jar .
 
 clean:
-	rm ${LIBRARY_ROOT}/armeabi/libsqlcipher_android.so && \
+	-rm ${LIBRARY_ROOT}/armeabi/libsqlcipher_android.so && \
 	rm ${LIBRARY_ROOT}/armeabi/libdatabase_sqlcipher.so && \
 	rm ${LIBRARY_ROOT}/sqlcipher.jar