Upgrade to Spark 1.0.2
Add JSON writing to Spark

Improve tests
Still need to add docs and sort out the Java type erasure
Fix incorrectly generated bytecode bug by using stricter declaration
Add saveJSON byte array variant

Unfortunately due to type erasure, the method cannot be overloaded
(different names are used)
[DOCS] Add section on Spark JSON writing
Minor improvements
[DOC] minor updates
Improve detection of index existence

Allow aliases (like _all) to be used only when reading data.

fix #205
fix #233
Fix typo (SparkCfg instead of SparkConf)
Allow index wild cards

improve index validation
relates #233
Bit more Spark tests
Improve + upgrade jacoco configuration
Upgrade to ES 1.3.2
Rename 2.1.0.M1 to 2.1.0.Beta1
java/scaladoc tweaks
Upgrade to Cascading 2.5.5
Update README.md
More formatting
[DOC] polishing
Release 2.1.0.Beta1
Next dev version