added widthdrawals, deposits and transfer totals
Added pry doc
Added helper for progress bar
refactored sql queries
filter by transaction type
aded grouping by date, type and account
group by category
removed percentage
added @filter variable in show method
added instance variable @transactions
changed query in active transaction method
changed variable @account to @transactions
changed method transactions to grouped_transactions
used the variable transaction
Merge pull request #3 from elherzt/fix/sow-account

added @filter variable in show method