Some very, very minor grammar corrections. I'll leave the readability on the technical issues to those smarter than me.

Last sentence of the first paragraph in the "Introduction" section: "This has implications. . ."
Second paragraph in the "Introduction" section: ". . .of Conjoin as its implementation. . ."
First sentence, first paragraph in the "Darksend" section: remove a in the sentence ". . .into a larger anonymous transactions. . ."
First sentence, first paragraph in the "Defending Against Attack" section: ". . .challenges to dealing. . ." or ". . .challenges in dealing. . ."
Second sentence, second paragraph in the "Defending Against Attack" section: "A transaction for. . ."
First sentence, fourth paragraph in the "Defending Against Attack" section: eliminate space after first parens
First sentence, fourth paragraph in the "Improved Anonymity" section: ". . .will be elected in its place."
First and second sentences, first paragraph in the "Master Node Election" section: ". . . transaction IDs in the darksend pool. By adding up the hash values of the transaction IDs,. . ."
First sentence, second paragraph in the "Master Node Election" section: ". . .pubkeys of the 
users' outputs."
Second sentence, second paragraph in the "Master Node Election" section: Not sure of sentence construction here, ". . .can know who is master, that is 
tamper­proof and decentralized."
First sentence, third paragraph in the "Master Node Responsibility" section: ". . .their inputs and outputs. . ."
First sentence, first paragraph in the "Improved Pool Anonymity" section: "Users who want. . ."
Third sentence, second paragraph in the "Reward Curve vs Reward Halving" section: ". . .drop very steadily over. . ."
Third paragraph in the "Reward Curve vs Reward Halving" section looks unfinished?
First sentence, second paragraph in the "Proof-of-Work Utilizing X11" section: ". . .more difficult to create. . ."