Updating introduction

Signed-off-by: Cristian Maureira Fredes <cmaureir@csrg.inf.utfsm.cl>
Updating community

Signed-off-by: Cristian Maureira Fredes <cmaureir@csrg.inf.utfsm.cl>
Updating goals v2

Signed-off-by: Cristian Maureira Fredes <cmaureir@csrg.inf.utfsm.cl>
Leave terminal alone when open the PDF

Signed-off-by: Cristian Maureira Fredes <cmaureir@csrg.inf.utfsm.cl>
Aspell

Signed-off-by: Cristian Maureira Fredes <cmaureir@csrg.inf.utfsm.cl>