added .gitignore for conviviality

Signed-off-by: Maxime Déraspe <maximilien1er@gmail.com>
Added 2 classes : SequenceKmerReader (read a fasta file into kmers, GenomeAssemblyReader : the actor to manage the creation of kmers and offloading to the storekeeper

Signed-off-by: Maxime Déraspe <maximilien1er@gmail.com>
Changed Mother class to distinguish between a graph reader and a sequence assembly reader

Signed-off-by: Maxime Déraspe <maximilien1er@gmail.com>
Added GenomeAssemblyReader and SequenceKmerReader to the Makefile

Signed-off-by: Maxime Déraspe <maximilien1er@gmail.com>
Removed debug in code

Signed-off-by: Maxime Déraspe <maximilien1er@gmail.com>