Changed execution shell to bash

Signed-off-by: Pankaj Bhambhani <pankajb64@gmail.com>
Merge pull request #28 from pankajb64/master

Changed Execution Shell from sh to bash in build_run_example scripts
Merge pull request #31 from agrewal/master

Bumping version to 3.0.0 and scala version 2.9.1
Fixed specs resolution. Added local ./sbt file.
Merge pull request #33 from twitter/cleanup1

Fixed specs resolution. Added local ./sbt file.
Modified to scala 2.9.2
Removed IDEA files from repository.
Delete idea.properties
Minor changes to plugins.sbt, README.
Clarified commenting of the xsbt-gpg-plugin
Merge pull request #34 from twitter/cleanup2

Minor cleanups
Compliation fixes for examples: Run local `sbt` regardless of whether "." is in user's PATH, and remove hardcoding of scala-2.8.1 scala-library.jar path.
Update sbt command prefix to explicitly be $root directory.
Add -1 to `ls` command for clarity.
Merge pull request #38 from dfuhry/master

Compliation fixes for examples
Implement optional renumbering of node ids as sequentially increasing indices.
Move node renumber classes to util, change internal / external node id variable names, other small fixes.
Add RenumberedGraph example which reads a generated graph into memory both with & without renumbering.
Update RenumberedGraph example to use cleaner approximate byte size of generated graph.
Fix comment typo in unrenumbered graph reading.