tFix two-grains examples (issue #11), thanks @ovgeorge - Granular.jl - Julia package for granular dynamics simulation
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       ---
   DIR commit 696a7c97df4dd85b8cd88f2910e6b32e6ad5730f
   DIR parent 8732f02947d6d56e2591e177772cc90fe3c91f55
  HTML Author: Anders Damsgaard <anders@adamsgaard.dk>
       Date:   Sun, 10 Mar 2019 20:24:48 +0100
       
       Fix two-grains examples (issue #11), thanks @ovgeorge
       
       Diffstat:
         M examples/two-grains.jl              |       2 +-
       
       1 file changed, 1 insertion(+), 1 deletion(-)
       ---
   DIR diff --git a/examples/two-grains.jl b/examples/two-grains.jl
       t@@ -16,7 +16,7 @@ Granular.addGrainCylindrical!(sim, [0.5, 0.0], 0.1, 0.05)
        
        # Set a velocity of 0.5 m/s along +x for the first grain, to make it bump into
        # the second grain.
       -sim.grains[1].lin_vel = [1.0, 0.0]
       +sim.grains[1].lin_vel[1:2] = [1.0, 0.0]
        
        # Before we can run the simulation, we need to specify the computational time
        # step, how often to produce output files for visualization, and for how long to