Test/Utils: Add "tags" attribute to tag test units
Test/Utils: Add "filter_tags" to filter test units according to a tag list
TestAll: Merge and tag tests, handle "ommit-tags" argument

Current tags:
 - example: unit test based on examples
 - regression: regression tests
 - long: tests known to be long, ie. more than 1min on Core i5

Example:
- launching only regression tests:
$> python test_all.py -t example
- do not launch long tests:
$> python test_all.py -t long
TestAll: Use tag "llvm" to filter LLVM dependent test units
Container: Refactor and comment
Container: Fix import, refactor file reading
Container: update API with full words
Container: Refactor in class and subclass for PE, ELF and Unknown
TestDis: update example to use Container
TestDis: fix imports
Merge pull request #2 from commial/feature-test-tags

[Feature] Tests tags
Merge pull request #3 from commial/feature-binary

[Feature] Binary: Container
Create README.md
README: Add basic examples
README: Link to Sibyl tool
README: Add a ToC (generated thanks to doctoc)
Merge pull request #4 from commial/patch-1

README: Add a ToC (generated thanks to doctoc)
README: fix title
README: fix title bis
Machine: add jit/arch log properties