typo
updated and cleaned up README
further work on README
log lock acquisition
replace lockfile with singleton
moved singleton check to appropriate place
[#338] refresh next tx_index when there is a reorg
Merge pull request #377 from JahPowerBit/develop3

[#338] refresh next tx_index when there is a reorg
fixes #375
Add ToC

Table of Contents
Merge pull request #380 from rippler/patch-3

Add ToC
catch TypeError in API
TODO: generalise for all API methods
Merge pull request #381 from JahPowerBit/develop3

catch TypeError in API
[#382] empty util.BLOCK_LEDGER before parsing block instead after
Merge pull request #383 from JahPowerBit/develop3

[#382] empty util.BLOCK_LEDGER before parsing block instead after
Revert "moved singleton check to appropriate place"

This reverts commit e6ec38efc73116326cd679fb0ec9369372e25eac.
clean up consensus check
[#384] add tx_info in txlist_hash
remove unused import