misc: added script for backing up MongoDB
misc: added script for backing up MongoDB

Related to #234.

RichardKnop/tsuru,firebitsbr/tsuru,kgrvamsi/tsuru,firebitsbr/tsuru,guilhermebr/tsuru,gciotta/tsuru,4eek/tsuru,cgvarela/tsuru,guilhermebr/tsuru,cgvarela/tsuru,hcxiong/tsuru,ggarnier/tsuru,gwmoura/tsuru,tsuru/tsuru,ArxdSilva/tsuru,mderaldo/tsuru,kgrvamsi/tsuru,cezarsa/tsuru,tsuru/tsuru,ggarnier/tsuru,tsuru/tsuru,kgrvamsi/tsuru,hugoantunes/tsuru,ggarnier/tsuru,Endika/tsuru,hugoantunes/tsuru,jblancett/tsuru,RichardKnop/tsuru,jblancett/tsuru,tuxmonteiro/tsuru,Endika/tsuru,mderaldo/tsuru,ArxdSilva/tsuru,4eek/tsuru,gwmoura/tsuru,gwmoura/tsuru,4eek/tsuru,gciotta/tsuru,hcxiong/tsuru,ggarnier/tsuru,cezarsa/tsuru,tuxmonteiro/tsuru,RichardKnop/tsuru,tsuru/tsuru,Endika/tsuru,cgvarela/tsuru,guilhermebr/tsuru,hcxiong/tsuru,mderaldo/tsuru,tuxmonteiro/tsuru,guilhermebr/tsuru,gciotta/tsuru,jblancett/tsuru,cezarsa/tsuru,cezarsa/tsuru,ArxdSilva/tsuru,firebitsbr/tsuru,ArxdSilva/tsuru