Initial commit

First commit with SPACECAP scource code from CRAN
Own HPD function

Inserted a function for Highest Probability Density credible interval;
TeachingDemos is no longer required.
First speed-up changes

Changed lik1 and lik1c in 3 places; put if(Mb==1) around beta update
section
ReadMe and tweak gitignore
Merge pull request #1 from mikemeredith/noTeachingDemos

No teaching demos
Main speedup and corrections

moved GOF to reporting loop
removed Sys.sleep
reduced update frequency of progress bar
corrected calculation of p2
modified reporting to console
output in Global environmnet as LastRunMCMC
distances scaled to [0,10]
neighbours depend on pixel size
MMDM use as initial vlaue of sigma
testing
changed 12.5 to 1
Scaling of sigma in output
mmdm/4 to candidate generator for sigma
oops, should be log scale
Simplified candidate generator for sigma
independent updating of loglam0 now
Took out unnecessary llvector calculation
Typo corrected
fixed conflict in README