Adding instruction for kdiff3
Adding instruction for kdiff3

Change-Id: I139efb589936ec55075cf0379f974b691edbc5e4

googleapis/gapic-generator,googleapis/gapic-generator,geigerj/toolkit,swcloud/toolkit,swcloud/toolkit,googleapis/gapic-generator,googleapis/gapic-generator,saicheems/toolkit,tcoffee-google/toolkit,shinfan/toolkit,swcloud/toolkit,shinfan/toolkit,jcanizales/toolkit,jcanizales/toolkit,swcloud/toolkit,googleapis/gapic-generator,jmuk/toolkit,shinfan/toolkit,googleapis/gapic-generator,swcloud/toolkit,shinfan/toolkit,saicheems/toolkit,googleapis/gapic-generator,shinfan/toolkit