bump to snap version
ignore empty bulk requests to ES

draft fix for #90
add more safe guards for empty payloads

related to #90
try to fix failing Travis build
update readme
update links
update docs
minor fix
another minor fix
make sure to enable TCP_NODELAY / disable Nagle's algorithm
remove incorrect import of commons.lang

fixes #95
introduce own ReflectionUtils
settings permissions in Git for gradle

fixes #94
Fixed a doc ID clash
Fixed a bad link in the docs
fix download link
add pmd and findbugs reporting
tweak findbugs
gradle updates

upgrade to gradle 1.8
add jacoco for code coverage
disable jacoco for now