Slightly enhanced PrimitiveVector:
1. Added trim() method
2. Added size method.
3. Renamed getUnderlyingArray to array.
4. Minor documentation update.
Return the vector itself for trim and resize method in PrimitiveVector.
Add PrimitiveVectorSuite and fix bug in resize()
Merge pull request #3 from aarondav/pv-test

Add PrimitiveVectorSuite and fix bug in resize()
Merge pull request #182 from rxin/vector

Slightly enhanced PrimitiveVector:

1. Added trim() method
2. Added size method.
3. Renamed getUnderlyingArray to array.
4. Minor documentation update.