Minor fixes for defaults PH and SWCON
Attempt to fix problem where the AgMIP map doesn't have any experiments,
only weathers.
Attempt to fix problem where the AgMIP map doesn't have any experiments,
only weathers - missed a file
Merge branch 'master' of https://github.com/agmip/translator-apsim.git
Another fix for ensuring empty experiments collection is tolerated
Separate Initial Conditions into Inital Water and Initial Nitrogen in
template
Minor change to planting rule to not log a cultivar message if
apsim_cul_id is present in JSON
Added vtd-xml for fast xml processing.
Cant find it on maven repo, so please run:

mvn install:install-file  -Dfile=vtd-xml.jar \
                          -DgroupId=com.ximpleware \
                          -DartifactId=vtd-xml \
                          -Dversion=2.11 \
                          -Dpackaging=jar \
                          -DgeneratePom=true
Added setters and JsonIgnore where appropriate.
Merge branch 'master' of https://github.com/agmip/translator-apsim

Conflicts:
	src/main/java/org/agmip/translators/apsim/core/SoilLayer.java
SoilReader reads all Soils from apsim xml file. Added some tests code  and data as well.
fixed local installation of vtd.jar
SoilReader can read a sinlge soil now!
Added a WeatherReader
Added simpler test for reading in APSIM weather files
Simulation reader first implementation. Currently reads Soils and Weather.
Readme updated
Readme updated
Readme updated
Changed weather to look for CO2Y variable.