Place data in aqm2018/aqmdata folder. Then this should work anywhere after git push.
d<- read.csv("http://tinyurl.com/aqm2018-data/Crows.csv")
str(d)
## 'data.frame': 85 obs. of 6 variables:
## $ Species: Factor w/ 1 level "Corvus corone": 1 1 1 1 1 1 1 1 1 1 ...
## $ Sub : Factor w/ 2 levels "cornix","corone": 1 1 1 1 1 1 1 1 1 1 ...
## $ Gl : num 54.6 58.2 63.1 63.4 63.6 ...
## $ Bp : num 18.7 19.8 17.3 18.8 17.7 ...
## $ Bd : num 17.1 18 16.3 17.5 16.2 ...
## $ SC : num 6.58 6.28 5.68 6.4 5.64 5.78 6.28 6.2 6.36 5.92 ...