Merge pull request #29 from articlemetrics/dev-addQueryOptions

Dev add query options
almevents should be fully operational now, alm still needs some work, small fix to almdatepub, #28
added source arg to almevents and alm, fixed various bugs - #29
fixed many things, see news for v.0.1.0
Merge pull request #31 from ropensci/almv3

finally merging almv3 to master
removed articlelength fxn and tests
Merge branch 'master' of https://github.com/ropensci/rplos
updated readme