Test2.in to assign LENS PU via env

this file is a new implementation of getting the current states of
agents.  before the agent that has been picked to be updated will write
an agent.ex file, and the influencing agent will write an infl.ex file.
However, according to Mark, the way we want diffusion to work, using
an agent.ex file does not work.  Instead the .in file has been updated
to set the agent state by reading in an environment variable, p0-p4,
n0-n4
new .in file uses a capital 'I' Infl.ex
ignore .wt, .ex, and .out files from LENS
deleted old files

these files were mostly for testing
plot average pos, neg activation per time step baseR ggplot
ignore pout, Rmd files
file to make weights
move lens r script into lens experiment folder
outputs go into subfolder not parent
renamed Test2.in to more understandable name, UpdateFromInfl.in
updated lens .in file from Test2.in to UpdateFromInfl.in
Merge pull request #1 from chendaniely/feature-multi-agent-neural-network-first-pass

Feature multi agent neural network first pass