added the way to calculate splice site change caused by allele change
added the way to calculate splice site change caused by allele change

james-monkeyshines/ensembl,mjg17/ensembl,james-monkeyshines/ensembl,danstaines/ensembl,mjg17/ensembl,at7/ensembl,Ensembl/ensembl,at7/ensembl,Ensembl/ensembl,mjg17/ensembl,james-monkeyshines/ensembl,muffato/ensembl,at7/ensembl,willmclaren/ensembl,muffato/ensembl,willmclaren/ensembl,at7/ensembl,muffato/ensembl,james-monkeyshines/ensembl,danstaines/ensembl,muffato/ensembl,Ensembl/ensembl,danstaines/ensembl,mjg17/ensembl,Ensembl/ensembl