Description updates

Still not completely happy with the description. Need to figure out something more awesome sounding.
Merge pull request #19 from Maxwolf/master

Maxwolf's Minechem Rewrite
Merge pull request #20 from jakimfett/5.0.5-cleanup-2

Maxwolf's Minechem rewrite: approved
Fixing revision number 4-->5
Changing banner location
Adding null check for itemstack, nesting if statements for easier debugging
Adding a null check for itemstack, adding try/catch
Adding two null checks, removing pointless debug information
Fixing SidedProxy mistake
Merge branch 'master' of github.com:jakimfett/MineChem
Merge pull request #2 from jakimfett/master

Update to Minechem Main